common: Don't use baseurl for epel at all

Despite having a mirrorlist present in the repo file, if contacting the baseurl fails, the yum transaction fails which causes our jobs to fail.  Let's try *just* using a mirrorlist.

See #542 (comment)

Signed-off-by: David Galloway <dgallowa@redhat.com>

Author: David Galloway

roles/common/defaults/main.yml

@@ -17,15 +17,13 @@ epel_mirror_baseurl: "http://dl.fedoraproject.org/pub/epel"
 epel_repos:
   epel:
     name: "Extra Packages for Enterprise Linux"
-    baseurl: "{{ epel_mirror_baseurl }}/{{ ansible_distribution_major_version }}/{% if ansible_distribution_major_version == '8' %}Everything/{% endif %}$basearch"
     mirrorlist: file:///etc/yum.repos.d/epel-mirrorlist
     failovermethod: priority
     # ternary requires ansible >= 1.9
     enabled: "{{ enable_epel | ternary(1, 0) }}"
     gpgcheck: 0
   epel-testing:
     name: "Extra Packages for Enterprise Linux - Testing"
-    baseurl: "{{ epel_mirror_baseurl }}/testing/{{ ansible_distribution_major_version }}/{% if ansible_distribution_major_version == '8' %}Everything/{% endif %}$basearch"
     mirrorlist: file:///etc/yum.repos.d/epel-testing-mirrorlist
     failovermethod: priority
     enabled: 0