Merge pull request #6640 from falloutdurham/ec2_count

ec2: Adding type int for count (in line with other cloud modules)
Merge pull request #6631 from kavu/add_testing_deps_to_hacking_readme

Add tesing deps installation into hacking/README
adds missing `'` to debconf examples
Update CONTRIBUTING.md

Some clarifications about workflow and the priority queue in GitHub
Merge pull request #6642 from sethwoodworth/patch-1

[docs] adds missing `'` to debconf examples
Add a fact providing the full hostname, without the domain portion
truncated.
Accept status code from a list of valid codes.
Accept status code from a list of valid codes.
Accept status code from a list of valid codes.
(cast the list of acceptable codes to a list of int )
Fixes #4777 add --force-handlers option to run handlers even if tasks fail
Update changelog for force-handlers
Merge branch 'atomic_move_restore_owner_group_rebase' of https://github.com/tyll/ansible into tyll-atomic_move_restore_owner_group_rebase
Update 'validate=' parameter documentation to make clear that the command
passed via this paramter is not passed via shell and so all shell features
will not work.
Revert "add yum module downgrade support"

This reverts commit cbd1da645756e6d6fbd255bde37d9be452c547fe.
Added ansible_date_time.weekday as a fact. This returns Monday,Tuesday,Wednesday,Thursday,Friday,Saturday, or Sunday depending on the remote servers time. Useful for backups the way I use it
'changed' key is not defined when task fails

fix KeyError introduced by fix of #6591.
Fixing ownership when atomic_move is creating a file while sudo'ing

Fixes #6647
Check to make sure the host is in the inventory vars cache before clearing it

Fixes #6660
Catch permissions errors related to opening a known_hosts file in modules

Fixes #6644
Merge branch 'file_fixes_agg' of https://github.com/bcoca/ansible into bcoca-file_fixes_agg