Master node bootstrapping is broken

Master node bootstrapping is broken in b586de3ce0107c408faf5ce4f7aa1ef619d9dc05. Nailgun egg installation breaks

   Running setup.py egg_info for package markupsafe
    /opt/nailgun/build/markupsafe/setup.py:20: DeprecationWarning: Features are deprecated and will be removed in a future version. See http://bitbucket.org/pypa/setuptools/65.
      Extension('markupsafe._speedups', ['markupsafe/_speedups.c']),
    /usr/lib64/python2.6/distutils/core.py:113: DeprecationWarning: Features are deprecated and will be removed in a future version. See http://bitbucket.org/pypa/setuptools/65.
      _setup_distribution = dist = klass(attrs)
Downloading/unpacking six>=1.1,<1.2 (from nose2==0.4.1->Nailgun==0.1.0)
  Could not find a version that satisfies the requirement six>=1.1,<1.2 (from nose2==0.4.1->Nailgun==0.1.0) (from versions: 1.4.1, 1.3.0)
Cleaning up...
No distributions matching the version for six>=1.1,<1.2 (from nose2==0.4.1->Nailgun==0.1.0)