If the wrong status code is returned, ansible sets failed: true.
This means that a retry is never attempted.

Use .get('status') to work around the possibility that a status
may not be returned in some corner cases. For example:

TASK [grafana : Wait for grafana application ready]
***************** fatal: [some_remote_node]: FAILED! =>
{"failed": true, "msg": "The conditional check 'result.status
== 200' failed. The error was: error while evaluating
conditional (result.status == 200): 'dict object' has no
attribute 'status'"}

Change-Id: I14207d1a9e994fa25c1c061025fff5b64a71d690
Closes-Bug: #1742501