fix(install): add inline EPEL repo configuration for Amazon Linux 2

fail2ban/install.sls

@@ -3,6 +3,20 @@
 
 {% from "fail2ban/map.jinja" import fail2ban with context %}
 
+{%-   if salt['grains.get']('osfinger', '') in ['Amazon Linux-2'] %}
+fail2ban_epel_repo:
+  pkgrepo.managed:
+    - name: epel
+    - humanname: Extra Packages for Enterprise Linux 7 - $basearch
+    - mirrorlist: https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=$basearch
+    - enabled: 1
+    - gpgcheck: 1
+    - gpgkey: https://dl.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-7
+    - failovermethod: priority
+    - require_in:
+      - pkg: fail2ban.install
+{%-   endif %}
+
 fail2ban.install:
   pkg.installed:
     - name: {{ fail2ban.package }}