corrected package version check in initializeSlotsBeforeClass
added a TODO to
InstallAndRemovePackageFromEnabledRepoAfterSubscribingToPool_Test
added test coverage for blockedByBug-1095939 - during simultaneous
unsubscribe --all, we can cause: Runtime Error ERROR: deadlock
detected

MultiClientAttemptToDeadLockOnUnsubscribeAll_Test()