Use final release of Fedora 20 for heat test image

The image file has not changed, but the URL now points to
the release directory for Fedora 20.

Change-Id: Ie1a9bcc7da634996b25ef7f6fc694398c632549d
config: get_meta_section() misunderstands the beginning of metasection

For example, the line, "if [[ -n $no_proxy ]]; then" is misparsed
as the beginning of metasection because get_meta_section() misses
escaping of "|" unlike get_meta_section_files().
This patch adds necessary escape as "|" -> "\|".

Change-Id: Ic14b2ac167037c4f5db89492f0e8a4c5b13c7b6d
Closes-Bug: #1262960
Fix the option of a2ensite command

devstack fails with trema when  execute
"sudo a2ensite sliceable_switch" command, without ".conf" filename extension
with Apache2.4, Apache2.22. With Apache 2.2, it successes.
Because in the versions which newer than version 2.2,
file checking of a2ensite command is more severe.
So, a2ensite command forbid "sliceable_switch" without "/conf".

Added ".conf" filename extension.

Change-Id: I29a03cb59ee493345b7df0f1a9189eb3516c86e2
Closes-Bug: #1263017
Explicily enable the stores used by devstack

Devstack currently relies on the default value of the `known_stores`
configuration option. This patch enables explicitly the default stores
used by devstack.

The real fix for the issue below will land in Glance. However, since the
default stores will be FS and HTTP we need devstack to enable Swift's as
well, which is required in the gates, hence this patch.

Partially-fixes: #1255556
Change-Id: Id9aab356b36b2150312324a0349d120bbbbd4e63
Fix bad copy and paste in lib/swift

Change-Id: I3b7526b52867525b1d7aa634aa8163c520a92f97
Merge "Fix bad copy and paste in lib/swift"
Merge "Explicily enable the stores used by devstack"
Merge "Fix the option of a2ensite command"
Merge "Use final release of Fedora 20 for heat test image"