Avoid concatenation of None and string vlaues if profile_path is defined later in vcs_repository_list.

refactor code to be possible pass the parameter bt5_path to runTestSuite. With this, runTestSuite script can propagate this parameter to runUnitTest script

It avoids to clutter console output.

This ends up with using passed log parameter.

This avoids changing running user's git environment.

Log environment can be used to output to console.

They were removed by mistake in 887aa655

Changes are done manually, as files were moved.

Original log:

02666ca Enclose runTestSuite in its workspace.
d029684 Use safeRpcCall always during calling master.
70d2e4b Setup process group for test suite.
e94ff72 Always kill supervisord.
677895a Remove not filled kill lists.
b228b13 Make import list diff/patch friendly.
8ef8b9b Missing import.
37da900 Always set partition's permission.
346ff3b Cleanup test result when SubprocessError is raised.
5515a97 Reuse SubprocessError exception in more error cases.
e72a7c8 Remove no-op.
048d47d Remove debugging log.
dc8276c Increase verbosity.
2d47034 Get rid of empty lines between each commands.
bdd79ce Use timestamped logger in Updater & SlapOSControler.
e0ec540 Fix typo in log message.
d46f496 Output formated timestamp in front of each message.
2dfa0a9 Don't write to some dynamically-named, pwd-relative file.
de91c1f Catch all RPC exceptions.
d413f61 Move log files to testrunner's log_directory.
4d357a4 Provide and use run_directory instead of computing it.
0cd300b Define profile_path on individual repository list entry.
1f5e7a3 save memory by stopping supervisor

Original commits are available in http://git.erp5.org/repos/slapos.git
repository.

testnode maps some sections to internal parameters, so in order to avoid post
processing just keep keys as are.

For now the goal is to make testnode running, usage optimisation will be
applied later.

Use argparse and configparser in order to being able to pass parameters.