Updating CHANGELOG for the new validate_certs feature

Also removing validate_cert option from the cloudformation module docs,
as it does not use the standard ec2 connection.
Merge pull request #5998 from jimi-c/issue_3978_boto_ssl_cert_validation

Adding 'validate_certs' option to EC2 modules
Small fix for ec2 validate_certs option
Merge pull request #6002 from chrishoffman/ec2_validate

Small fix for ec2 validate_certs option
Add the start of an integration test structure using Ansible playbooks, also added an assert action plugin to make writing those easier.
Remove fixme and extraneous file.
Update CHANGELOG.md
Ensure option output is sorted.
Only display equals sign in summary for required options.
Adding the region to the output of the ec2 module's creation of a new instance.
Adding better failure output for chkconfig failures rather than
just saying that the service name is unknown
Allow equal sign in single-line ini variables
Merge pull request #6001 from jimi-c/issue_4087_sanitize_output

Filter out messages that match the pattern username:password@host
Merge branch 'allow-equals-in-ini-vars' of https://github.com/worklez/ansible into worklez-allow-equals-in-ini-vars
Remove superfluous/invalid quote

Allow the example to be copy-pasted with minimal confusion about the error.
Merge pull request #6014 from amirhhz/patch-1

Remove superfluous/invalid quote
Spelling correction
Merge pull request #5645 from resmo/fix/apt_pkg_version

apt: fixed pkg=<name>=<version> fails if package is not yet installed.

Tested and it fixes the problem on more recent versions of apt.
Merge pull request #6015 from angstwad/docfix

Spelling correction.
Added wait_timeout parameter