Add securityContext.fsGroup to deployment

Signed-off-by: Stefan Prodan <[email protected]>
(cherry picked from commit 9f2fcec)

Author: stefanprodan

config/manager/deployment.yaml

@@ -20,6 +20,8 @@ spec:
         prometheus.io/port: "8080"
     spec:
       terminationGracePeriodSeconds: 10
+      securityContext:
+        fsGroup: 1337
       containers:
         - name: manager
           image: fluxcd/source-watcher