Adapt ise communication to match ise-rest API

Ise-rest API provides get-by-id method for sxp query but the ID behind is not sgt value but internal UUID.
If there is sgt value available and the name/description is required in order to assign epg to sgt then no direct one-step query is supported.

Proposal: store uuids locally and if sgt is missing then read sgt summary from ise (get-all) and then query details only for new sgts.