Adds EntityFunctions and more EntityPredicates
Merge pull request #1384 from aledsage/feature/EntityFunctions

Adds EntityFunctions and more EntityPredicates
Added NOTIFY_ON_DUPLICATES to AbstractMembershipTrackingPolicy, default to existing behaviour (i.e. true)
Merge branch 'abstract-membership-tracking-policy-ignore-duplicates' of github.com:Nakomis/brooklyn into couchbase-running-sensor