Add fsGroup to pod security context

Required for AWS IAM Role bindings

Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>

config/manager/deployment.yaml

@@ -20,6 +20,10 @@ spec:
         prometheus.io/port: "8080"
     spec:
       terminationGracePeriodSeconds: 10
+      # Required for AWS IAM Role bindings
+      # https://docs.aws.amazon.com/eks/latest/userguide/iam-roles-for-service-accounts-technical-overview.html
+      securityContext:
+        fsGroup: 1337
       containers:
       - name: manager
         image: fluxcd/source-controller