Fix ironic deployment template

This PS simply removes some duplicate keys in the ironic deployment
template.

Change-Id: Ib51fd05bf8c0be3b03b9265c90f341ac04000d76
Signed-off-by: Pete Birley <pete@port.direct>

manifests/function/baremetal-operator/ironic.yaml

@@ -62,15 +62,10 @@ spec:
         - name: httpd
           image: "quay.io/metal3-io/ironic:latest"
           imagePullPolicy: Always
-          securityContext:
-             capabilities:
-               add: ["NET_ADMIN"]
           securityContext:
              capabilities:
                add: ["NET_ADMIN"]
           command: ["/bin/runhttpd"]
-          securityContext:
-            privileged: true
           volumeMounts:
               - mountPath: "/shared"
                 name: ironic-storage