Expose the playbook to callback plugins
Allow vault encrypted vars as extra_vars

Forward the vault_password to the yaml file utility.
Improvements to the rax inventory script
Output URL for debugging
Add version_compare filter
Fixes #6454 verify ec2 key fingerprints
Fixes #6750 Check git subcommand for --remote and expose errors
fixed error related to type being defined as a number
Addresses #6750 Use --help instead of -
Allow isprintable() util function to work with unicode

Fixes #6842
Add support for shared module documentation fragments
Use PluginLoader for module docs fragments
Use common file argument system previously implemented by @sivel for rax modules on the file modules as well (copy/file/template).
Application to other cloud providers would make very good sense.
Merge pull request #5555 from sivel/expose-playbook-to-callback

Expose the playbook to callback plugins
Merge pull request #6603 from sivel/rax-inventory-improvements

rax.py inventory script improvements
Merge pull request #6835 from sivel/version-compare-filter

Add version_compare filter
rax modules improvements

* Catch issues with invalid regions
* Ensure we send string only data as meta values in the rax module
* Add public_key/lookup example for rax_keypair
* Clean up import statements
Update changelog
Fix for #6353 adding a newline between assembled files
assemble module: fix insertion of newlines when not needed.

This builds on GH-6359 and changes the logic so that a newline is only inserted between fragments if the previous fragment does not end with a newline.