CFY-3784-stop-ui-calling-rest-on-start

[geokala]

Might be better to detect if cloudify rest service has SSL enabled and default to it if we look at being able to move the UI off the manager (but for that it would need some extra thought).

Until then, it will use https if non-SSL is disabled.

This should not introduce any significant security concerns as it works entirely over the manager's loopback, and except in unorthodox setups anyone attempting to sniff or man-in-the-middle this communication would have to be on the manager node and have root access.