Update operator base manifest to run as user (#156)

The user is the same as the one specified in the Dockerfile
Fixes: https://ondat.atlassian.net/browse/FEED-257

Author: Ricardo Osorio

config/manager/operator.yaml

@@ -26,7 +26,7 @@ spec:
     spec:
       serviceAccountName: storageos-operator
       securityContext:
-        runAsNonRoot: true
+        runAsUser: 65532
       containers:
       - command:
         - /manager