fix: pdb pod selector (#305)

Author: mishraomp

charts/app/templates/backendGo/templates/pdb.yaml

@@ -9,6 +9,7 @@ metadata:
 spec:
   selector:
     matchLabels:
-      app.kubernetes.io/name: {{ include "backendGo.fullname" . }}
+      app.kubernetes.io/name: {{ include "backendGo.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
   minAvailable: {{ .Values.backendGo.pdb.minAvailable }}
 {{- end }}

charts/app/templates/backendJava/templates/pdb.yaml

@@ -9,6 +9,7 @@ metadata:
 spec:
   selector:
     matchLabels:
-      app.kubernetes.io/name: {{ include "backendJava.fullname" . }}
+      app.kubernetes.io/name: {{ include "backendJava.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
   minAvailable: {{ .Values.backendJava.pdb.minAvailable }}
 {{- end }}

charts/app/templates/backendPy/templates/pdb.yaml

@@ -9,6 +9,7 @@ metadata:
 spec:
   selector:
     matchLabels:
-      app.kubernetes.io/name: {{ include "backendPy.fullname" . }}
+      app.kubernetes.io/name: {{ include "backendPy.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
   minAvailable: {{ .Values.backendPy.pdb.minAvailable }}
 {{- end }}