integration-playbook: Require RHEL repos.

Both the base and extras repos are required.  Rather than try to fuss
around with subscription manager, require two variables be defined
pointing to the baseurl's to use.  Assert that these variables are set
and non-empty.

Signed-off-by: Chris Evich <cevich@redhat.com>

contrib/test/crio-integration-playbook.yaml

@@ -1,6 +1,8 @@
 ## This playbook expects --extra-vars "commit=<commit>"
 ## and either --extra-vars "pullrequest=<PR #>" or
-## --skip-tags pr
+## --skip-tags pr.
+##
+## Required: --extra-vars extras_repo_baseurl=<HTTP or HTTPS>
 - hosts: all
   remote_user: root
   gather_facts: False  # Ansible dependencies need installing first
@@ -9,7 +11,11 @@
     cni_commit: dcf7368eeab15e2affc6256f0bb1e84dd46a34de
     integration_timeout_seconds: "{{ 60 * 60 * 2 }}"
   pre_tasks:
-    # Assumes subscription stuff won't get in the way
+    # Assert subscription stuff won't get in the way
+    - assert:
+        that:
+          - 'extras_repo_baseurl | default(False)'
+          - 'server_repo_baseurl | default(False)'
     - name: Install pre-requesites for ansible on all platforms
       raw: $(type -P dnf || type -P yum) install -y python libselinux-python yum-utils python3-pycurl
     # Gather facts
@@ -25,6 +31,7 @@
       description: "Extra Packages for Enterprise Linux"
       baseurl: "http://dl.fedoraproject.org/pub/epel/7/$basearch"
       metalink: "https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=$basearch"
+      enabled: True
       gpgcheck: True
       gpgcakey: "https://dl.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-7Server"
     when: (ansible_distribution == 'RedHat' or ansible_distribution == 'CentOS')
@@ -35,6 +42,26 @@
       - https://dl.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-7
       - https://dl.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL
     when: (ansible_distribution == 'RedHat' or ansible_distribution == 'CentOS')
+  - name: Enable required RHEL repositories
+    yum_repository:
+      name: "{{ item.key }}"
+      description: Required repo. for RHEL
+      baseurl: "{{ item.value }}"
+      gpgcheck: False
+      enabled: True
+    with_dict:
+      extras: '{{ extras_repo_baseurl | mandatory }}'
+      server: '{{ server_repo_baseurl | mandatory }}'
+    when: (ansible_distribution == 'RedHat')
+  - name: Don't let old cache interfere with new efforts
+    shell: $(type -P dnf || type -P yum) clean all && rm -rf /var/cache/{yum,dnf}
+  - name: disable redhat yum plugin
+    ini_file:
+      path: "/etc/yum/pluginconf.d/subscription-manager.conf"
+      section: main
+      option: enabled
+      value: 0
+    when: (ansible_distribution == 'RedHat')
   - name: Update all packages
     yum:
       name: '*'