core: Add the ability to consume Quota in internal commands

adding a new boolean to CommandBase to indicate
whether the command will consume quota when invoked as internal.

Added a c'tor to VdcActionType, to allow setting this boolean:
HotSetNumberOfCpus(184, ActionGroup.EDIT_VM_PROPERTIES, false, QuotaDependency.VDS_GROUP, true)

Change-Id: Id4c8074eef5607107703bcb68df441a577137b04
Bug-Url: https://bugzilla.redhat.com/1083177
Signed-off-by: Kobi Ianko <kobi@redhat.com>