Make CI work on GitHub.

Author: robert-de-bock

README.md

@@ -68,7 +68,7 @@ This role has been tested on these [container images](https://hub.docker.com/u/r
 |---------|----|
 |[Alpine](https://hub.docker.com/r/robertdebock/alpine)|all|
 |[Amazon](https://hub.docker.com/r/robertdebock/amazonlinux)|Candidate|
-|[EL](https://hub.docker.com/r/robertdebock/enterpriselinux)|all|
+|[EL](https://hub.docker.com/r/robertdebock/enterpriselinux)|9|
 |[Debian](https://hub.docker.com/r/robertdebock/debian)|all|
 |[Fedora](https://hub.docker.com/r/robertdebock/fedora)|all|
 |[Ubuntu](https://hub.docker.com/r/robertdebock/ubuntu)|all|

meta/main.yml

@@ -16,7 +16,7 @@ galaxy_info:
         - Candidate
     - name: EL
       versions:
-        - all
+        - "9"
     - name: Debian
       versions:
         - all