Comments in requirements.txt are not parsed

[Amir Sadoughi]

I've ran python setup.py install in the latest quantum and pbr choked on parsing a line leading with a #:

(venv)amir@devbox:~/bug/quantum$ python setup.py install
running install
Traceback (most recent call last):
  File "setup.py", line 21, in <module>
    d2to1=True)
  File "/usr/lib/python2.7/distutils/core.py", line 152, in setup
    dist.run_commands()
  File "/usr/lib/python2.7/distutils/dist.py", line 953, in run_commands
    self.run_command(cmd)
  File "/usr/lib/python2.7/distutils/dist.py", line 972, in run_command
    cmd_obj.run()
  File "/home/amir/bug/quantum/pbr-0.5.17-py2.7.egg/pbr/packaging.py", line 310, in run
    _pip_install(links, self.distribution.install_requires, self.root)
  File "/home/amir/bug/quantum/pbr-0.5.17-py2.7.egg/pbr/packaging.py", line 95, in _pip_install
    " ".join(_wrap_in_quotes(_missing_requires(requires)))),
  File "/home/amir/bug/quantum/pbr-0.5.17-py2.7.egg/pbr/packaging.py", line 83, in _missing_requires
    pkg_resources.Requirement.parse(r))]
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2598, in parse
    raise ValueError("No requirements found", s)
ValueError: ('No requirements found', '# Cisco plugin dependencies')

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/34892

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/34892
Committed: http://github.com/openstack/heat/commit/da3b5ecfdd0c64805b40ecb535c077f9f0044988
Submitter: Jenkins
Branch: master

commit da3b5ecfdd0c64805b40ecb535c077f9f0044988
Author: Steven Hardy <email address hidden>
Date: Fri Jun 28 15:50:01 2013 +0100

    Remove comments from requirements.txt (workaround pbr bug)

    Workaround for pbr bug #1191923

    Change-Id: I4960216834cf624d8bcf88e7a3e7485cf5ace85f

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/36208
Committed: http://github.com/stackforge/designate/commit/5e7219aa7ccfecaf061ce961dabb5c6b4413c1a0
Submitter: Jenkins
Branch: master

commit 5e7219aa7ccfecaf061ce961dabb5c6b4413c1a0
Author: Kiall Mac Innes <email address hidden>
Date: Tue Jul 9 12:31:44 2013 +0100

    Remove comments from *requirements.txt (workaround pbr bug)

    Workaround for pbr bug #1191923

    Change-Id: Iebf4bd311006be9fe1b4fcc5753886aaa5805461