[maven-release-plugin] prepare release polls-1.5.2

git-svn-id: https://source.sakaiproject.org/svn/polls/branches/polls-1.5.x@125162 66ffb92e-73f9-0310-93c1-f5514f145a0a
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://source.sakaiproject.org/svn/polls/branches/polls-1.5.x@125164 66ffb92e-73f9-0310-93c1-f5514f145a0a
Jenkins post-build: Auto-updating master version to 2.9-SNAPSHOT for next release http://builds.sakaiproject.org:8080/job/polls%201.5.x/

git-svn-id: https://source.sakaiproject.org/svn/polls/branches/polls-1.5.x@125165 66ffb92e-73f9-0310-93c1-f5514f145a0a