Trying to touch userContent rather than some random file, so that we can verify the result remotely.
Reducing rounds to two: one for capability, one for random transport commands.

This is intended to be a true blackbox test: while we customize the client behavior, it can run against any server.

[SECURITY-206] Need to call ChannelConfigurator on JNLP slave channels

[security-186]fix relative path

[SECURITY-214] OfflineCause.toString() is a string, not necessarily HTML

[SECURITY-186] check user permissions in Queue API

[SECURITY-184] fix test failures checking null value

[FIXED SECURITY-200] - Do not expose Api tokens to other users by default

[SECURITY-195] - Prevent the folder escaping

[SECURITY-184] check secret-key in handshake

System property can be used to restore the original behavior

[FIXED SECURITY-192] - Require Jenkins.READ permissions to access CLI pages