Merge "Add fluentd enable option"

ansible/group_vars/all.yml

ansible/roles/common/defaults/main.yml

ansible/roles/common/handlers/main.yml

ansible/roles/common/tasks/config.yml

ansible/roles/common/templates/conf/output/00-local.conf.j2

ansible/roles/haproxy/defaults/main.yml

ansible/roles/haproxy/templates/haproxy.cfg.j2

ansible/roles/swift/defaults/main.yml

ansible/roles/swift/templates/account.conf.j2

ansible/roles/swift/templates/container.conf.j2

ansible/roles/swift/templates/object.conf.j2

ansible/roles/swift/templates/proxy-server.conf.j2

doc/source/user/advanced-configuration.rst

etc/kolla/globals.yml