* Changes the reddwarf.conf.test flag so "use_nova_server_volume"
is turned off, as it should be, and fixes a resulting fake mode bug.
* Fixes tests to not check for volume when
"reddwarf_main_instance_has_volume" is specified in the test config.
* Changes poll_until to reuse Reddwarf implementation instead of
rewriting it just for the tests.
* Adds tests to confirm its possible to log into a real MySQL instance.
These are only run for "real mode" in a VM or other environment, but
it's necessary that they live here.
* Changes the "get_address" method of the InstanceTestInfo object to
get pulled from the test config (necessary when hitting other
environments).
* Fixes some bugs in guest agent models.
* Deleted the pagination test. It can't run very quickly in the tox
fake mode, so there's no point in keeping it here (it still exists
in Reddwarf-Integration).
Change-Id: I2835762c4180e1ca594b27194564b8f993aa4066
Fixes: bug #1085188