Renaming Delta Operations as per RFC 9144

RFC 9144 recommends naming convention for operations that can be performed on any datastore.
The recommended names are:
- create
- remove
- replace
Whereas in CPS Delta feature these operaitions were named:
- add
- remove
- update
So, "add" and "update" operations have been changed to "create" and "replace" respectively.

Issue-ID: CPS-2393
Change-Id: Ie39f5f8ccc91e96cf484ca7fbc833a6be8758054
Signed-off-by: Arpit Singh <as00745003@techmahindra.com>
11 files changed