Revert "exclude caffeine to reduce jar size"

This reverts commit 6ff7b4f.

Author: vdegans

exec/jdbc-all/pom.xml

@@ -428,7 +428,6 @@
               <exclude>antlr:*</exclude>
               <exclude>com.beust:*</exclude>
               <exclude>com.dropbox.*</exclude>
-              <exclude>com.github.ben-manes.caffeine:caffeine</exclude>
               <exclude>com.github.stefanbirkner</exclude>
               <exclude>com.google.code.findbugs:jsr305:*</exclude>
               <exclude>com.googlecode.json-simple:*</exclude>