Current FaultAPIs (get_fault/get_faults/get_faults_by_id) cannot
distinguish error and no data case. None will be returned for both
case. To separate these two cases, and implement the code more as
pythonic way, FaultAPIsV2 is added, which will raise exception for
error case.
In order to separate the cases, the C functions called by API are
modified to return FALSE for error, and return None for no data.
Test:
Pass basic deploy test, and "fm alarm-*" cmd work as before.
Use fm_api_test.py/fm_api_v2_test.py to manual trigger API call,
confirm alarm could be created/get/deleted, and value is the same
as "fm alarm-list".
Modify fmManager to simulate error case, confirm exception is
generated for FaultAPIsV2, and behavior is not changed for
FaultAPIs.
Story: 2004859
Task: 29097
Change-Id: Ic1c0a15eb8dfec6c368099b096d6a158da0d3c77
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
cca4dc0c54