[HELIX-455] Add REST API for submitting jobs
[HELIX-430] Fix test failures caused by restlet 2.2
[HELIX-446] Remove ZkPropertyTransfer and restlet dependency from helix-core
[HELIX-444] add per-participant partition count gauges to helix, rb=21419
[HELIX-94] Add the ability to enable and disable a resource, rb=20401
[HELIX-461] Add partitions without top state metric