Logs from Beaker jobs are normally very brief, with the standard
output/error containing detailed information. Make ipa-run-tests
with BeakerLib plugin follow this convention.

Only include INFO and higher level messages in the Beaker logs.
Downgrade several message levels to DEBUG.
Log to console using Python logging instead of showing the Beaker logs.

Since ipa-run-tests sets up its own logging, Nose's own log
handling just causes duplicate messages. Disable it with --nologcapture.

Phase names are now in the format:
test-module-TestClass-test_method: First line of docstring

https://fedorahosted.org/freeipa/ticket/3723

- Use the external hostname when connecting to remote hosts
- Make it possible to specify working directory for remote commands
- Move kinit calls to installation code
  This allows tests where installation is done later
- Log at error level when a remote command fails unexpectedly
- Clean up test directory before testing
- Break infinite recursion in mkdir_recursive if dir can't be created

Set up the hostname, /etc/resolv.conf, and /etc/hosts on remote
hosts in the test setup.
Undo the changes in test teardown.

Part of the work for https://fedorahosted.org/freeipa/ticket/3621

Part of the work for https://fedorahosted.org/freeipa/ticket/3621

After each test, and after class setups and teardowns, the BeakerLib
integration plugin now downloads log files from the remote masters
and submits them using rlFileSubmit.

Part of the work for: https://fedorahosted.org/freeipa/ticket/3621

Introduce a class inspired by subprocess.Popen that handles
running a command on a remote machine and handling its output.

To separate stdout & stderr streams of a remote command,
they need to be read in parallel, so that one of them doesn't
stall the runner when its buffer fills up. Accomplish this
by using a thread for each stream.

Part of the work for: https://fedorahosted.org/freeipa/ticket/3621

Add methods to run commands and copy files to Host objects.
Adds a base class for integration tests which can currently install
and uninstall IPA in a "star" topology with per-test specified number
of hosts.
A simple test for user replication between two masters is provided.
Log files from the remote hosts can be marked for collection, but the
actual collection is left to a Nose plugin.

Part of the work for: https://fedorahosted.org/freeipa/ticket/3621

Integration tests are configured via environment variables.
Add a framework for parsing these variables and storing them
in easy-to-use objects.

Add an `ipa-test-config` executable that loads the configuration
and prints out variables needed in shell scripts.

Part of the work for https://fedorahosted.org/freeipa/ticket/3621