Added some simple Net_SSH2 tests

Placed helper at top again in my test

Removed a whitespace
Merge pull request #241 from mpscholten/ssh2-tests

Added some simple Net_SSH2 tests

* mpscholten/ssh2-tests:
  Added some simple Net_SSH2 tests

Conflicts:
	tests/Net/SSH2Test.php
Merge branch 'master' into php5

* master:
  Added some simple Net_SSH2 tests