default value of paste_config breaks apache+wsgi on Ubuntu

[Stefan Andres]

When using https://github.com/stackforge/puppet-keystone/commit/c30afe5aef247cd35b110d9778bab91cd63b5f6a which was merged into stable/juno with apache+wsgi, apache won't be able to start the wsgi because of:

[Tue Jun 09 12:31:52.820680 2015] [:error] [pid 62367:tid 140460182050560] [remote 77.247.82.199:52085] mod_wsgi (pid=62367): Target WSGI script '/usr/lib/cgi-bin/keystone/main' cannot be loaded as Python module.
[Tue Jun 09 12:31:52.820701 2015] [:error] [pid 62367:tid 140460182050560] [remote 77.247.82.199:52085] mod_wsgi (pid=62367): Exception occurred processing WSGI script '/usr/lib/cgi-bin/keystone/main'.
[Tue Jun 09 12:31:52.820722 2015] [:error] [pid 62367:tid 140460182050560] [remote 77.247.82.199:52085] Traceback (most recent call last):
[Tue Jun 09 12:31:52.820742 2015] [:error] [pid 62367:tid 140460182050560] [remote 77.247.82.199:52085] File "/usr/lib/cgi-bin/keystone/main", line 39, in <module>
[Tue Jun 09 12:31:52.820772 2015] [:error] [pid 62367:tid 140460182050560] [remote 77.247.82.199:52085] config.configure()
[Tue Jun 09 12:31:52.820781 2015] [:error] [pid 62367:tid 140460182050560] [remote 77.247.82.199:52085] File "/usr/lib/python2.7/dist-packages/keystone/common/config.py", line 973, in configure
[Tue Jun 09 12:31:52.820795 2015] [:error] [pid 62367:tid 140460182050560] [remote 77.247.82.199:52085] help='Do not monkey-patch threading system modules.'))
[Tue Jun 09 12:31:52.820803 2015] [:error] [pid 62367:tid 140460182050560] [remote 77.247.82.199:52085] File "/usr/lib/python2.7/dist-packages/oslo/config/cfg.py", line 1625, in __inner
[Tue Jun 09 12:31:52.820815 2015] [:error] [pid 62367:tid 140460182050560] [remote 77.247.82.199:52085] result = f(self, *args, **kwargs)
[Tue Jun 09 12:31:52.820822 2015] [:error] [pid 62367:tid 140460182050560] [remote 77.247.82.199:52085] File "/usr/lib/python2.7/dist-packages/oslo/config/cfg.py", line 1781, in register_cli_opt
[Tue Jun 09 12:31:52.820833 2015] [:error] [pid 62367:tid 140460182050560] [remote 77.247.82.199:52085] raise ArgsAlreadyParsedError("cannot register CLI option")
[Tue Jun 09 12:31:52.820855 2015] [:error] [pid 62367:tid 140460182050560] [remote 77.247.82.199:52085] ArgsAlreadyParsedError: arguments already parsed: cannot register CLI option

The file /usr/share/keystone/keystone-dist-paste.ini does not exist, though /etc/keystone/keystone-paste.ini does. So when using /etc/keystone/keystone-paste.ini as default, it will work again.

Also, the documentation in the puppet module says it's optional, but that it not true since it ships a default value (besides the value being broken)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/juno
Review: https://review.openstack.org/189742

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/189742
Committed: https://git.openstack.org/cgit/stackforge/puppet-keystone/commit/?id=e5cb116e042732032080d5e1c655e35213d77581
Submitter: Jenkins
Branch: stable/juno

commit e5cb116e042732032080d5e1c655e35213d77581
Author: Emilien Macchi <email address hidden>
Date: Tue Jun 9 14:27:30 2015 +0000

    Revert "Add paste_config optional parameter"

    This reverts commit 87cf7521cfec78aac69f95ec0f78b8c94fe4b9ae.

    Change-Id: Ied6ea0490ee7113271c0652dc221270533b8b7ed
    Closes-bug: #1463358