Support for Oracle Linux (#3655)

Fixed Issue #1032

test case for OEL7 AIL with kubeadm

Add packet CI stuff for oracle 7

roles/bootstrap-os/tasks/bootstrap-oracle.yml

@@ -0,0 +1,21 @@
+---
+- name: Download Oracle Linux public yum repo
+  get_url:
+    url: https://yum.oracle.com/public-yum-ol7.repo
+    dest: /etc/yum.repos.d/public-yum-ol7.repo
+
+- name: Enable Oracle Linux repo
+  ini_file:
+    dest: /etc/yum.repos.d/public-yum-ol7.repo
+    section: "{{ item }}"
+    option: enabled
+    value: "1"
+  with_items:
+    - ol7_latest
+    - ol7_addons
+    - ol7_developer_EPEL
+
+- name: Install packages requirements for bootstrap
+  yum:
+    name: container-selinux
+    state: present

roles/bootstrap-os/tasks/main.yml

@@ -25,6 +25,9 @@
 - include_tasks: bootstrap-opensuse.yml
   when: '"openSUSE" in os_release.stdout'
 
+- include_tasks: bootstrap-oracle.yml
+  when: '"Oracle" in os_release.stdout'
+
 - name: Create remote_tmp for it is used by another module
   file:
     path: "{{ ansible_remote_tmp | default('~/.ansible/tmp') }}"