Add VPC support for EIP module

Revert 4833c2fd

Fixes #4652

Fixes #4500 python bools return uppercase True and False, so allow those for BOOLEANS in module common

Add enable_availability_zone parameter to ec2 module. 

New bigip_pool_member module

update bug reporting suggestions a bit

Provide warning about "with_items: '{{ loop }}'" being redundant only when {{ starts the expression value.  Fixes #4582.

setup module, replace ':' by '_' in interface name, fix #4586

check for ubuntu distribution first

Fixed typo in docsite/rst/playbooks_tags.rst

fix logic in module host to add aliases even if none exist already, fix #4563

fix distribution detection in apt_repository module, so it also work on mint as it work on Debian, partially fix #4587

self._has_aliases is used to know if a alias already exist, but
the test we want is to know if we need to add a new alias, which
is stored in self.aliases

on Mint as it work on Debian, fix #4587.

PPAs are not supported however, since that's a Ubuntu specific feature
and mint is detected as a generic distribution and use a different
codename than the Ubuntu release it is based on, which mean that apt_repository
cannot add detect and add the proper url without a better heuristic.

for a PR.

now correctly changes script permission in all cases

First round of changes to the EIP module to get it to be able to work well inside a VPC, and to be able to delete EIPs as well

Signed-off-by: Brian Coca <briancoca+ansible@gmail.com>

fix change_when example for False