- Split main() function into several small ones.
- Current work on disk failure tests. This is not yet finished.
- Fix small typo in qa_node.py.

Reviewed-by: schreiberal

Testing failure on the primary node is currently disabled due to drbd problems.

Reviewed-by: iustinp

Reviewed-by: iustinp

Reviewed-by: schreiberal

- Implement colours in qa_utils.
- Print warning for cron script.

Reviewed-by: iustinp

Added tests:
- “gnt-cluster getmaster”
- “gnt-cluster version”
- “gnt-instance list”
- “gnt-instance reinstall”

Reviewed-by: schreiberal

- Test “gnt-backup export” and “gnt-backup import”.
- Move “ResolveInstanceName” to qa_utils.py.
- Fix tests for “ganeti-watcher”.
- Make instance shutdown and startup configurable.

Reviewed-by: schreiberal

Reviewed-by: iustinp

Reviewed-by: iustin

Reviewed-by: iustinp

Reviewed-by: iustinp

Reviewed-by: iustinp

Reviewed-by: iustinp

- Run “gnt-cluster verify” and “gnt-cluster info” after adding all nodes
- Remove unused --cleanup option
- Remove --verbose option and always print executed SSH commands

Reviewed-by: iustinp

This changes the raising of exceptions from:
  raise Exception, value
to
  raise Exception(value)

as the first form will be removed in python-3000 and the second form is
preferred now.

The changes also involve a few cases of changing from raising standard
exceptions and use our own ones.

The new version also fixes many pylint-generated warnings, especially in
ganeti-noded where I changed many methods to @staticmethod.

There is no functionality changed (barring any bugs).

- Split up info tests and add more of them
- Replace map() by [x for x in y]

Reviewed-by: iustinp

Reviewed-by: iustinp