Drop EL8 support -- Foreman/Katello do not support EL8 anymore

Author: evgeni

metadata.json

@@ -47,21 +47,18 @@
     {
       "operatingsystem": "RedHat",
       "operatingsystemrelease": [
-        "8",
         "9"
       ]
     },
     {
       "operatingsystem": "CentOS",
       "operatingsystemrelease": [
-        "8",
         "9"
       ]
     },
     {
       "operatingsystem": "AlmaLinux",
       "operatingsystemrelease": [
-        "8",
         "9"
       ]
     }

spec/setup_acceptance_node.pp

@@ -18,9 +18,3 @@
 package { 'glibc-langpack-en':
   ensure => installed,
 }
-
-if $facts['os']['release']['major'] == "8" {
-  yumrepo { 'powertools':
-    enabled => true,
-  }
-}