Fix Python exceptions

If thread launch_cluster_Monitor() and launch_leader_election() operates on the configmap at the same time, Will cause a error 'Exception in thread "Thread-1"'.
This error will cause the thread to get stuck. Configmap will not be updated and the error "data too old" will be reported.
Just passing kubernetes_API exceptions is not enough, all are more appropriate.

Change-Id: I6baa9ece474f9c937fe9bce2231ef500562e0406

mariadb/Chart.yaml

@@ -15,7 +15,7 @@ apiVersion: v1
 appVersion: v10.2.31
 description: OpenStack-Helm MariaDB
 name: mariadb
-version: 0.2.9
+version: 0.2.10
 home: https://mariadb.com/kb/en/
 icon: http://badges.mariadb.org/mariadb-badge-180x60.png
 sources:

mariadb/templates/bin/_start.py.tpl

@@ -756,7 +756,7 @@ def monitor_cluster():
     while True:
         try:
             update_grastate_configmap()
-        except kubernetes.client.rest.ApiException as error:
+        except Exception as error:
             logger.error("Error updating grastate configmap: {0}".format(error))
         time.sleep(state_configmap_update_period)
 
@@ -777,7 +777,7 @@ def leader_election():
     while True:
         try:
             deadmans_leader_election()
-        except kubernetes.client.rest.ApiException as error:
+        except Exception as error:
             logger.error("Error electing leader: {0}".format(error))
         time.sleep(cluster_leader_ttl / 2)
 

releasenotes/notes/mariadb.yaml

@@ -25,4 +25,5 @@ mariadb:
   - 0.2.7 add ingress resources
   - 0.2.8 Helm 3 - Fix Job labels
   - 0.2.9 Update htk requirements
+  - 0.2.10 Fix Python exceptions
 ...