[maven-release-plugin] prepare release scheduler-2.9.1

git-svn-id: https://source.sakaiproject.org/svn/jobscheduler/branches/jobscheduler-2.9.x@119692 66ffb92e-73f9-0310-93c1-f5514f145a0a
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://source.sakaiproject.org/svn/jobscheduler/branches/jobscheduler-2.9.x@119694 66ffb92e-73f9-0310-93c1-f5514f145a0a
Reverting pom back to SNAPSHOT

git-svn-id: https://source.sakaiproject.org/svn/jobscheduler/branches/jobscheduler-2.9.x@119720 66ffb92e-73f9-0310-93c1-f5514f145a0a