Fix regression: Sanitize sudo success_key from stdout

Commit 7e3dd10 caused a regression with sanitizing the sudo success_key from stdout.
There is no newline in front of SUDO-SUCCESS when using sudo.
This change adapts the regex to make the line break optional.

Tested on Ubuntu 14.04.
Update docs to mention new PPA
Merge pull request #8124 from dataxu/dev-asg-set-health-checks

Added setting of the health_check options on an existing ASG
Merge pull request #8126 from dingus9/patch-1

Update lineinfile validate help
Expand target for mysql_db

Fixes #8128
Merge branch 'patch-2' of https://github.com/napkindrawing/ansible into napkindrawing-patch-2
Merge branch 'napkindrawing-patch-2' into devel
Merge branch 'devel' of https://github.com/leverich/ansible into leverich-devel
Load existing group_vars file for new group_by group

if it was not loaded yet, which happens if that group
didn't exist yet in the inventory.

fixes #8159
Merge branch 'leverich-devel' into devel
Merge pull request #8170 from sergevanginderachter/issue_8159

Load existing group_vars file for new group_by group
Support for OS X 10.10 DP3.
Merge pull request #8143 from PinGwynn/feature

portage: default exit (not fail) if sync=yes in check mode
Merge pull request #8139 from peterkh/devel

Fix "TypeError: group id must be integer" if groupid passed in for group key
Adds channel key parameter
Merge pull request #8145 from amandolo/ec2_tag

Fix EC2_TAG module output structure when listing tags
Merge pull request #8166 from scottbrown/bugfix-ansible-vault-read-password-does-not-close-file-handle

Fixing improperly closed file handle in ansible vault
Merge pull request #8172 from phenomenes/channel-key-parameter

Adds channel key parameter
Correct string concatenation error
Add spaces between sentences in formatted docs.

Increases readability when using `ansible-doc`.