Merge existing dmi-plugin of data access passthrough endpoints

- Introduced datastore enum and execute existing method based on given
  datastore.

Issue-ID: CPS-1550
Signed-off-by: sourabh_sourabh <sourabh.sourabh@est.tech>
Change-Id: Idf908a89dce2f5f1a155d630e04ba7869328b94d
Signed-off-by: sourabh_sourabh <sourabh.sourabh@est.tech>
5 files changed