fix python::requirements Error: Parameter cwd failed on Exec and command not found
add system virtualenv to tests
Merge pull request #8 from salimane/pr_python_requirements_cwd

python::requirements Error: Parameter cwd failed on Exec for virtualenv=system
Conform to Puppet style guide

Fixes: puppet-lint "ERROR: two-space soft tabs not used" error
Fix regression with $cwd in python::requirements

Commit 8b22e3ecd90dd3ac741ff107d6f3fc8c511443ba introduces a regression
which in some cases specifies the full path to pip as it's current
working directory, rather than the actual directory pip is in. Obviously
this will fail.

This commit fixes this.
Merge pull request #9 from zoni/pipcwd

Fix regression with $cwd in python::requirements
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  Fix regression with $cwd in python::requirements
  Conform to Puppet style guide
  add system virtualenv to tests
  fix python::requirements Error: Parameter cwd failed on Exec and command not found

Conflicts:
	manifests/requirements.pp