[RHDM-870] Fix AMQ ping service name

[rimolive]

JIRA Link: https://issues.jboss.org/browse/RHDM-870

"ping" must be used as Service name as AMQ clustering configuration hard-coded this name.

Signed-off-by: rimolive ricardo.martinelli.oliveira@gmail.com

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[errantepiphany]

Doesn't this need to change as well?

              {
                "name": "OPENSHIFT_DNS_PING_SERVICE_NAME",
                "value": "${APPLICATION_NAME}-amq-ping"
              },