Make sure requested version tag gets downloaded

There is a subtle bug in how the git module currently works. If the
version you request is a tag name, and you've already got the repo
cloned, and the tag name is a new tag, but refers to the already checked
out working copy, the git module would exit early without change. This
is bad as it means the new tag ref was not fetched and could not be used
in later tasks.

This change will check if the version is a remote tag, and if the tag
doesn't exist locally. If that is true, it'll do a fetch.

The activity could still be seen as not a change, because the working
copy won't be updated, if the new tag refers to the already checked out
copy, but that's not different than before and can be fixed as a more
comprehensive overhaul of tracking change in the git module.
Fixing the unicode issue in uri for EL6 platforms

Fixes #5869
Merge branch 'git_version_tags' of https://github.com/j2sol/ansible into j2sol-git_version_tags
Fix fails on ubuntu due to missing /etc/motd

Some systems that we are testing on may not have /etc/motd. So we need to create a file that we can control and use that for the further tests.
Merge pull request #6165 from risaacson/fix_fetch_integration

Fix fails on ubuntu due to missing /etc/motd

Tests functional on centos6, ubuntu1204 and ubuntu1310 now.