BAM-117 added lazy instantiation of active collections in support of BAM-113 to provide clustered support. Currently despite overlord-bam having a dependency on infinispan, if attempting to immediately access the cache manager, it fails due to 'not started'. But lazy instantiation may be generally useful, so provides a useful workaround for now. Configuration of the default cache container is now obtained from the common overlord-bam.properties file when running in an AS7 environment.