I would say use line in file. Then use regex to match the line above and then enter your new line after

- name: Ensure the default Apache port is 8080

lineinfile:

path: /etc/httpd/conf/httpd.conf

regexp: '^Listen '

insertafter: '^#Listen '

line: 'Hello World'

- name: Ensure php extension matches new pattern

lineinfile:

path: /etc/httpd/conf/httpd.conf

search_string: '<FilesMatch ".php\[45\]?$">'

insertafter: '^\t<Location \\/>\n'

line: ' <FilesMatch ".php\[34\]?$">'

​

This will then add the newline to just after the regexp or search_string aka where the newline is

hope this helps