adding container drool files
adding constants for drool files names
making drool files as arguments to AutoscalerRuleEvaluator
adding getter/setters for stats in MemberStatsContext
adding expand cluster logic to AS
Merge branch 'container-autoscaling' of https://git-wip-us.apache.org/repos/asf/stratos into container-autoscaling
change logging level from info to debug
reading hostname from container for memberId
calling createContainers() from drool
Merge branch 'container-autoscaling' of https://git-wip-us.apache.org/repos/asf/stratos into container-autoscaling
fixing drools logic and adding comments
Merge branch 'container-autoscaling' of https://git-wip-us.apache.org/repos/asf/stratos into container-autoscaling
adding terminateContainer logic to AS and refactoring drools logging
avoid catching throwable