Fixed ansible_managed comment in .cnf configs

[aniro]

In case ansible_managed is a multiline string, role produces malformed configs.
ansible.cfg:

ansible_managed =
    This file is managed by ansible.
    Don't make changes here - they will be overwritten.

resultant config:

$ head /etc/my.cnf
#
This file is managed by ansible.
Don't make changes here - they will be overwritten.
...

with fix applied:

$ head /etc/my.cnf
#
#
# This file is managed by ansible.
# Don't make changes here - they will be overwritten.
#

[geerlingguy]

Thanks, makes sense!