Merge pull request #352 from shenrie/master

Support enums for resource schema requests
Put enum schema in schema dict of get_object_schema
Removed log statements in datastore
Bumped ion-defs
Adds breakpoint to pyon
Merge pull request #353 from lukecampbell/breakpoint

Adds breakpoint to pyon
Merge branch 'master' of github.com:ooici/pyon
Refactor resource-id header from endpoint to policy interceptor