fix missing always block inside post

[tianleh]

Signed-off-by: Tianle Huang tianleh@amazon.com

Description

During testing of the Jenkins job, I find this following error.

Started by user [opensearch](http://jenki-jenki-fpgmrv2ryxko-1366042710.us-east-1.elb.amazonaws.com/user/admin)
Rebuilds build #[17](http://jenki-jenki-fpgmrv2ryxko-1366042710.us-east-1.elb.amazonaws.com/job/Playground/job/tianleh-test/job/tianleh-os-yum-4-12/17)
Obtained jenkins/opensearch/distribution-build.jenkinsfile from git https://github.com/tianleh/opensearch-build.git
Running in Durability level: MAX_SURVIVABILITY
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
WorkflowScript: 397: Expected a symbol @ line 397, column 29.
                               lib.jenkins.Messages.new(this).add(
                               ^

WorkflowScript: 396: Invalid condition "script" - valid conditions are [always, changed, fixed, regression, aborted, success, unsuccessful, unstable, failure, notBuilt, cleanup] @ line 396, column 25.
                           script {
                           ^

WorkflowScript: 397: Arguments to "error" must be explicitly named. @ line 397, column 29.
                               lib.jenkins.Messages.new(this).add(
                               ^

3 errors

	at org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:310)
	at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1085)
	at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:603)
	at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:581)
	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:558)
	at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:298)
	at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:268)
	at groovy.lang.GroovyShell.parseClass(GroovyShell.java:688)
	at groovy.lang.GroovyShell.parse(GroovyShell.java:700)
	at org.jenkinsci.plugins.workflow.cps.CpsGroovyShell.doParse(CpsGroovyShell.java:142)
	at org.jenkinsci.plugins.workflow.cps.CpsGroovyShell.reparse(CpsGroovyShell.java:127)
	at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.parseScript(CpsFlowExecution.java:571)
	at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.start(CpsFlowExecution.java:523)
	at org.jenkinsci.plugins.workflow.job.WorkflowRun.run(WorkflowRun.java:337)
	at hudson.model.ResourceController.execute(ResourceController.java:97)
	at hudson.model.Executor.run(Executor.java:429)
Finished: FAILURE

Issues Resolved

Check List

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[codecov-commenter]

Codecov Report

Merging #2029 (60cf5a8) into main (7012178) will increase coverage by 0.06%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main    #2029      +/-   ##
============================================
+ Coverage     94.17%   94.23%   +0.06%     
  Complexity       25       25              
============================================
  Files           195      198       +3     
  Lines          3860     3902      +42     
  Branches         29       29              
============================================
+ Hits           3635     3677      +42     
  Misses          219      219              
  Partials          6        6              

Impacted Files	Coverage Δ
src/test_workflow/perf_test/perf_test_cluster.py	80.00% <0.00%> (-2.86%)	⬇️
...est_workflow/perf_test/perf_single_node_cluster.py	100.00% <0.00%> (ø)
...est_workflow/perf_test/perf_test_cluster_config.py	100.00% <0.00%> (ø)
...test_workflow/perf_test/perf_multi_node_cluster.py	100.00% <0.00%> (ø)
..._workflow/perf_test/perf_test_runner_opensearch.py	96.77% <0.00%> (+0.10%)	⬆️
...w/perf_test/perf_test_runner_opensearch_plugins.py	100.00% <0.00%> (+4.34%)	⬆️

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