SOLR-13978: Remove non-essential components from default configset

The default configset no longer has the following:
   - Library inclusions (<lib ../>) for extraction, solr-cell libs, clustering, velocity and language identifier
   - /browse, /tvrh and /update/extract handlers
   - TermVector component (if someone wants it, can be added using config APIs)
   - XSLT response writer
   - Velocity response writer
If you want to use them in your collections, please add them to your configset manually or through the Config APIs.

solr/CHANGES.txt

@@ -127,6 +127,14 @@ Upgrade Notes
 * SOLR-13970: Using Collapse filter or expand component with grouping is explicitly disallowed as the combination
  would cause inconsistent behavior and NPEs.
 
+* SOLR-13978: The default configset no longer has the following:
+ - Library inclusions (<lib ../>) for extraction, solr-cell libs, clustering, velocity and language identifier
+ - /browse, /tvrh and /update/extract handlers
+ - TermVector component (if someone wants it, can be added using config APIs)
+ - XSLT response writer
+ - Velocity response writer
+ If you want to use them in your collections, please add them to your configset manually or through the Config APIs.
+
 New Features
 ---------------------
 * SOLR-13821: A Package store to store and load package artifacts (noble, Ishan Chattopadhyaya)

solr/core/src/test-files/solr/configsets/_default/conf/solrconfig.xml

@@ -72,17 +72,6 @@
  The examples below can be used to load some solr-contribs along
  with their external dependencies.
  -->
- <lib dir="${solr.install.dir:../../../..}/contrib/extraction/lib" regex=".*\.jar" />
- <lib dir="${solr.install.dir:../../../..}/dist/" regex="solr-cell-\d.*\.jar" />
-
- <lib dir="${solr.install.dir:../../../..}/contrib/clustering/lib/" regex=".*\.jar" />
- <lib dir="${solr.install.dir:../../../..}/dist/" regex="solr-clustering-\d.*\.jar" />
-
- <lib dir="${solr.install.dir:../../../..}/contrib/langid/lib/" regex=".*\.jar" />
- <lib dir="${solr.install.dir:../../../..}/dist/" regex="solr-langid-\d.*\.jar" />
-
- <lib dir="${solr.install.dir:../../../..}/contrib/velocity/lib" regex=".*\.jar" />
- <lib dir="${solr.install.dir:../../../..}/dist/" regex="solr-velocity-\d.*\.jar" />
  <lib dir="${solr.install.dir:../../../..}/dist/" regex="solr-ltr-\d.*\.jar" />
 
  <!-- an exact 'path' can be used instead of a 'dir' to specify a
@@ -770,42 +759,12 @@
  </lst>
  </requestHandler>
 
-
- <!-- A Robust Example
-
- This example SearchHandler declaration shows off usage of the
- SearchHandler with many defaults declared
-
- Note that multiple instances of the same Request Handler
- (SearchHandler) can be registered multiple times with different
- names (and different init parameters)
- -->
- <requestHandler name="/browse" class="solr.SearchHandler" useParams="query,facets,velocity,browse">
- <lst name="defaults">
- <str name="echoParams">explicit</str>
- </lst>
- </requestHandler>
-
- <initParams path="/update/**,/query,/select,/tvrh,/elevate,/spell,/browse">
+ <initParams path="/update/**,/query,/select,/spell">
  <lst name="defaults">
  <str name="df">_text_</str>
  </lst>
  </initParams>
 
- <!-- Solr Cell Update Request Handler
-
- http://wiki.apache.org/solr/ExtractingRequestHandler
-
- -->
- <requestHandler name="/update/extract"
- startup="lazy"
- class="solr.extraction.ExtractingRequestHandler" >
- <lst name="defaults">
- <str name="lowernames">true</str>
- <str name="fmap.content">_text_</str>
- </lst>
- </requestHandler>
-
  <!-- Search Components
 
  Search components are registered to SolrCore and used by
@@ -936,30 +895,6 @@
  </arr>
  </requestHandler>
 
- <!-- Term Vector Component
-
- http://wiki.apache.org/solr/TermVectorComponent
- -->
- <searchComponent name="tvComponent" class="solr.TermVectorComponent"/>
-
- <!-- A request handler for demonstrating the term vector component
-
- This is purely as an example.
-
- In reality you will likely want to add the component to your
- already specified request handlers.
- -->
- <requestHandler name="/tvrh" class="solr.SearchHandler" startup="lazy">
- <lst name="defaults">
- <bool name="tv">true</bool>
- </lst>
- <arr name="last-components">
- <str>tvComponent</str>
- </arr>
- </requestHandler>
-
- <!-- Clustering Component. (Omitted here. See the default Solr example for a typical configuration.) -->
-
  <!-- Terms Component
 
  http://wiki.apache.org/solr/TermsComponent
@@ -980,30 +915,6 @@
  </arr>
  </requestHandler>
 
-
- <!-- Query Elevation Component
-
- http://wiki.apache.org/solr/QueryElevationComponent
-
- a search component that enables you to configure the top
- results for a given query regardless of the normal lucene
- scoring.
- -->
- <searchComponent name="elevator" class="solr.QueryElevationComponent" >
- <!-- pick a fieldType to analyze queries -->
- <str name="queryFieldType">string</str>
- </searchComponent>
-
- <!-- A request handler for demonstrating the elevator component -->
- <requestHandler name="/elevate" class="solr.SearchHandler" startup="lazy">
- <lst name="defaults">
- <str name="echoParams">explicit</str>
- </lst>
- <arr name="last-components">
- <str>elevator</str>
- </arr>
- </requestHandler>
-
  <!-- Highlighting Component
 
  http://wiki.apache.org/solr/HighlightingParameters
@@ -1215,46 +1126,6 @@
  </updateRequestProcessorChain>
  -->
 
- <!-- Language identification
-
- This example update chain identifies the language of the incoming
- documents using the langid contrib. The detected language is
- written to field language_s. No field name mapping is done.
- The fields used for detection are text, title, subject and description,
- making this example suitable for detecting languages form full-text
- rich documents injected via ExtractingRequestHandler.
- See more about langId at http://wiki.apache.org/solr/LanguageDetection
- -->
- <!--
- <updateRequestProcessorChain name="langid">
- <processor class="org.apache.solr.update.processor.TikaLanguageIdentifierUpdateProcessorFactory">
- <str name="langid.fl">text,title,subject,description</str>
- <str name="langid.langField">language_s</str>
- <str name="langid.fallback">en</str>
- </processor>
- <processor class="solr.LogUpdateProcessorFactory" />
- <processor class="solr.RunUpdateProcessorFactory" />
- </updateRequestProcessorChain>
- -->
-
- <!-- Script update processor
-
- This example hooks in an update processor implemented using JavaScript.
-
- See more about the script update processor at http://wiki.apache.org/solr/ScriptUpdateProcessor
- -->
- <!--
- <updateRequestProcessorChain name="script">
- <processor class="solr.StatelessScriptUpdateProcessorFactory">
- <str name="script">update-script.js</str>
- <lst name="params">
- <str name="config_param">example config parameter</str>
- </lst>
- </processor>
- <processor class="solr.RunUpdateProcessorFactory" />
- </updateRequestProcessorChain>
- -->
-
  <!-- Response Writers
 
  http://wiki.apache.org/solr/QueryResponseWriter
@@ -1292,23 +1163,6 @@
  </queryResponseWriter>
  -->
 
- <!--
- Custom response writers can be declared as needed...
- -->
- <queryResponseWriter name="velocity" class="solr.VelocityResponseWriter" startup="lazy">
- <str name="template.base.dir">${velocity.template.base.dir:}</str>
- <str name="solr.resource.loader.enabled">${velocity.solr.resource.loader.enabled:true}</str>
- <str name="params.resource.loader.enabled">${velocity.params.resource.loader.enabled:false}</str>
- </queryResponseWriter>
-
- <!-- XSLT response writer transforms the XML output by any xslt file found
- in Solr's conf/xslt directory. Changes to xslt files are checked for
- every xsltCacheLifetimeSeconds.
- -->
- <queryResponseWriter name="xslt" class="solr.XSLTResponseWriter">
- <int name="xsltCacheLifetimeSeconds">5</int>
- </queryResponseWriter>
-
  <!-- Query Parsers
 
  https://lucene.apache.org/solr/guide/query-syntax-and-parsing.html