Copy service availability test from PDO contracts guardian to PDO services

[cmickeyb]

Current approach for testing availability of the [eps]services is to attempt retrieval of the information from the service through the /info URL. Basically, if the service is running then the operation will succeed.

However, to accomplish this, we dig through the configuration files looking for host interface and port (using grep). That means that any attempt to override the port or interface will make the test fail.

Recent commit to the PDO contracts guardian service adds a "TestService" interface that is part of the service code. That way, we can start the service and then test it using the same command line (meaning that we end up testing the same configuration). This approach should be far more reliable than the current approach.