doc/source/conf.py raises a SyntaxError on python2.6

[Ionuț Arțăriși]

Traceback from the Open Build Service: https://build.opensuse.org/package/show/Cloud:OpenStack:Master/openstack-heat

[ 56s] Running Sphinx v1.2.1
[ 56s] Traceback (most recent call last):
[ 56s] File "setup.py", line 22, in <module>
[ 56s] pbr=True)
[ 56s] File "/usr/lib64/python2.6/distutils/core.py", line 152, in setup
[ 56s] dist.run_commands()
[ 56s] File "/usr/lib64/python2.6/distutils/dist.py", line 975, in run_commands
[ 56s] self.run_command(cmd)
[ 56s] File "/usr/lib64/python2.6/distutils/dist.py", line 995, in run_command
[ 56s] cmd_obj.run()
[ 56s] File "/usr/lib64/python2.6/site-packages/pbr/packaging.py", line 758, in run
[ 56s] setup_command.BuildDoc.run(self)
[ 56s] File "/usr/lib64/python2.6/site-packages/sphinx/setup_command.py", line 157, in run
[ 56s] freshenv=self.fresh_env)
[ 56s] File "/usr/lib64/python2.6/site-packages/sphinx/application.py", line 107, in __init__
[ 56s] confoverrides or {}, self.tags)
[ 56s] File "/usr/lib64/python2.6/site-packages/sphinx/config.py", line 231, in __init__
[ 56s] raise ConfigError(CONFIG_SYNTAX_ERROR % err)
[ 56s] sphinx.errors.ConfigError: There is a syntax error in your configuration file: invalid syntax (conf.py, line 61)

I'd hope we can keep heat compatible with python 2.6 for just one more release as all the other openstack component still are.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/77834

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/77834
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=ee0018ef27e8f3f5b4d14e9bc3b66f7f4a425dab
Submitter: Jenkins
Branch: master

commit ee0018ef27e8f3f5b4d14e9bc3b66f7f4a425dab
Author: Ionuț Arțăriși <email address hidden>
Date: Tue Mar 4 11:00:29 2014 +0100

    replace dict comprehension with dict constructor

    this should make it compatible with python2.6

    Change-Id: I0f1ba0efb6f3ff47243118a2f8a7cdc7c7e72bfe
    Closes-Bug: #1287631