initial commit of a basic rolling upgrade guide, based on the lamp_haproxy example
flesh out the CI/CD and load balancer sections a bit
tweak some links and phrasing
Update install documentation to include httplib2

With v1.4.2 setup.py requires httplib2 for install
Fix debian builds by adding a missing ','
doc: fixed changelog format
Merge pull request #5350 from jlaska/fix_debian_builds

Fix debian builds by adding a missing ','
Merge pull request #5351 from resmo/fix/doc

doc: fixed changelog format
Merge pull request #5348 from lichesser/patch-1

Update install documentation to include httplib2
Add documentation example of using 'register' with a loop
Don't place (or higher) in the min_ansible_version
Merge pull request #5357 from sivel/no-or-higher

Do not place (or higher) in min_ansible_version
Allow for no role dependencies in role metadata
Default deps list in ansible-galaxy template to an empty list
add var for format.
Fixes #3973 live output for ansible-pull

Add a -v/--verbose option to ansible-pull to allow passing -vvvv to
ansible-playbook and to show stdout while the playbook executes
Revert "Fixes #3973 live output for ansible-pull"

This reverts commit 3b2a35ae004f4902eefe3aa12a1d2b746649e592.
Merge pull request #5360 from succhiello/feature/fix_galaxy_init_path_exists_msg

add var for format.
setup.py: fix ansible-galaxy was not installed when using make install
Merge pull request #5365 from resmo/fix/ansible-galaxy

setup.py: fix ansible-galaxy was not installed when using make install