Integration tests should use random ports

[EdHurtig]

For the time being, the integration tests should use randomized ports for Logging and Commands. This will allow mutilple jobs to coexist without deadlocking each other.

In the future we will contain these jobs on the Jenkins server in individual docker containers, etc

[EdHurtig]

Related to #62

[shorstman]

Is there a range of valid ports/any ports that shouldn't be tested?

[EdHurtig]

uh anything in the unprivileged port range (I think anything above 1024 IIRC) is fine. Probably best to restrict the range to something like 20,000 to 30,000 and check the random port before starting the test.

All this logic of port selection can be done in ControllerTest.py

[EdHurtig]

Alternatively... could use this plugin
https://wiki.jenkins.io/display/JENKINS/Port+Allocator+Plugin