Create a proposal for merging the ncmp datastore names

1. Create a new endpoint with path param :

/v1/ch/{cm-handle}/data/ds/{ncmp-datastore-name}:
$ref: 'ncmp.yml#/getNcmpDatastore'

ncmp-datastore-name can have the following names : 

• ncmp-datastore:passthrough-operational
• ncmp-datastores:operational
• ncmp-datastore:passthrough-running

2. Remove below endpoints and merge into above :

 /v1/ch/{cm-handle}/data/ds/ncmp-datastore:passthrough-operational:
 $ref: 'ncmp.yml#/getResourceDataForPassthroughOperational'

 /v1/ch/{cm-handle}/data/ds/ncmp-datastores:operational:
 $ref: 'ncmp.yml#/getResourceDataOperational'

 /v1/ch/{cm-handle}/data/ds/ncmp-datastore:passthrough-running:
 $ref: 'ncmp.yml#/resourceDataForPassthroughRunning'

Open Questions :

1. Required and optional params for merged endpoint.

A/C :

1. Create a proposal and agree with the team.
2. New endpoint should be backward compatable.