Rel17 openapi filename change 142e
Two type of changes:
- Yaml file name change to align with convention of CT yaml files
- no external reference, only local/relative reference (in 5gcNrm.yaml, TS28541_5GcNrm.yaml)
External dependence in 5gcNrm.yaml changed to local dependence, and copy the depended CT yaml files to SA5 branch commented out some attributes to avoid unnecessary other CT yaml files dependence