[FIX] MockServer: issue with guid properties cutoff

Change-Id: I1fd0eb7cff039ab6ca5d811dac9d3d93443366dd
[FIX] ODataMetadata: remove unnecessary fatal log

- remove unnecessary fatal log when retrieving function metadata
- check for function metadata in v2.ODataModel as in ODataModel

Change-Id: I467b224bee96b354169917c8430e4582e76918e8
Merge "[FIX] MockServer: issue with guid properties cutoff"
Merge "[FIX] ODataMetadata: remove unnecessary fatal log"