SOLR-6405: Update comment around retry pause padding.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1619895 13f79535-47bb-0310-9956-ffa450edef68
Merged revision(s) 1619906 from lucene/dev/trunk:
LUCENE-5898: Remove remaining hardcoded versions from build files; add a new version.properties file

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1619909 13f79535-47bb-0310-9956-ffa450edef68
Merged revision(s) 1619914 from lucene/dev/trunk:
Remove keywords property. Sorry!

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1619916 13f79535-47bb-0310-9956-ffa450edef68