allow obr client dependency to resolve spring for blueprint pid factory in osgi-inf - https://issues.apache.org/jira/browse/AMQ-4341

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1463526 13f79535-47bb-0310-9956-ffa450edef68
https://issues.apache.org/jira/browse/AMQ-4426 - fix and tests

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1463528 13f79535-47bb-0310-9956-ffa450edef68