[API][SupportIntegration] OPSAPS-32230 Set API version to 2 for collect_diagnostic_data()

 collect_diagnostic_data() was deprecated, in place of collect_diagnostic_data_45(), in CM API
 version 3 which was introduced as a part of CM 4.5.

 Testing done:
 -make test

Author: Aravind Selvan

python/src/cm_api/endpoints/cms.py

@@ -187,7 +187,9 @@ def collect_diagnostic_data(self, start_datetime, end_datetime, includeInfoLog=F
         'endTime': end_datetime.isoformat(),
         'includeInfoLog': includeInfoLog,
     }
-    return self._cmd('collectDiagnosticData', data=args)
+    # This method is deprecated as of CM API version 3 which was introduced
+    # in CM 4.5.
+    return self._cmd('collectDiagnosticData', data=args, api_version=2)
 
   def collect_diagnostic_data_45(self, end_datetime, bundle_size_bytes, cluster_name=None,
                                  roles=None, collect_metrics=False, start_datetime=None):