Enhance Eventing api to include function scope

Eventing started supporting full RBAC with scoped eventing functions in Neo and same function name can appear under different function scopes. With this all the life cycle operation needs to include "bucket" and "scope" name in uri(by default its value is * for backward compatibility)

Rest api:
/api/v1/functions/<function name>/<lifecycle operation>?bucket=<function_scope.bucket>&scope=<function_scope.scope>

Example:
/api/v1/functions/test/deploy?bucket=b1&scope=s1

Example schema: https://github.com/couchbase/eventing/blob/master/parser/handler_schema.json

status and stats api will include "function_scope" value to differentiate between different function

curl -X GET -u Administrator:password http://localhost:9300/api/v1/status{ "apps": [  {   "composite_status": "undeployed",   "name": "test",   "function_scope": {    "bucket": "src_bucket",    "scope": "_default"   },   "num_bootstrapping_nodes": 0,   "num_deployed_nodes": 0,   "deployment_status": false,   "processing_status": false,   "redeploy_required": false  } ], "num_eventing_nodes": 1}%