use lgetfilecon_raw instead of lgetfilecon to not depend on local level translation

If SELinux is enabled and mcstrans is running, daemons are restarted on each
run. After further debugging, it turn out that ansible compare the untranslated
level 's0' with the translated level 'SystemLow' due to mcstrans being running,
which trigger a handler since this is considered as a change.
Add AWS EC2 elastic IP module

Adds a new AWS EC2 module to associate/disassociate instances and
elastic IP addresses.
Fix typo: alises -> aliases
added firewalld module

update with feedback from pull request
added version checking, doesn't work in older versions
added try/catch around .connected call
AWS elastic IP: Support for allocating IPs

This commit adds support for allocating new elastic IPs with the
ec2_eip module.
Minor pep8 cleanup in ec2_eip module
Updating CHANGELOG for the ec2_eip module addition
Moving firewalld module from net_infra to system
More housekeeping

* Modified version_added strings in recent modules
* Added firewalld inclusion to the CHANGELOG
add more tests :
 - test part of ansible.runner.filter_plugins.core
 - test ansible.utils.unfrackpath