Expose timeout options for leader election at the AMQ Broker Operator level in OpenShift

Issue

• The AMQ Broker Operator is based on the operator-sdk that support leader election. A timeout on renew a lease == loosing the lease this lead to a restart of the AMQ Broker Operator pod.

  Exposing timeout options for leader election at the AMQ Broker Operator level will allow to avoid lot of restarts:

      spec:
      containers:
      args:
      --leader-lease-duration=60
      --leader-renew-deadline=40
      --leader-retry-period=5