Adding a new execution module to manipulate JIRA tickets

[mirceaulinic]

What does this PR do?

Adding a new execution module to manipulate JIRA tickets - very useful to dynamically create tickets as in response to various events (e.g., create ticket on interface down, or on server reboot etc.).

[damon-atkins]

Please rename jira_mod to atlassian_jira

[rallytime]

One small thing to fix, otherwise this looks good to me. The name of the module is fine with me.

[rallytime]

print_function and unicode_literals need to be added here for imports

[mirceaulinic]

Fixed @rallytime

[damon-atkins]

Reason for the name change e.g. atlassian_jira is so other atlassian modules can have the name atlassian_* pattern. And also mod not need in the name of a module as its in the module directory.

[cachedout]

I don't agree with the proposed naming. We don't, for example, name the apache module apache_foundation_apache simply because the Apache Foundation produces other software. Jira is well-known on its own and I just don't see how including the vendor name adds any clarity or organizational value.