Move to Ansible 3.4.0 (#7672)

* Ansible: move to Ansible 3.4.0 which uses ansible-base 2.10.10

* Docs: add a note about ansible upgrade post 2.9.x

* CI: ensure ansible is removed before ansible 3.x is installed to avoid pip failures

* Ansible: use newer ansible-lint

* Fix ansible-lint 5.0.11 found issues

* syntax issues
* risky-file-permissions
* var-naming
* role-name
* molecule tests

* Mitogen: use 0.3.0rc1 which adds support for ansible 2.10+

* Pin ansible-base to 2.10.11 to get package fix on RHEL8

roles/container-engine/cri-o/tasks/crio_repo.yml

@@ -53,6 +53,7 @@
     option: enabled
     value: "0"
     backup: yes
+    mode: 0644
   when:
     - ansible_distribution in ["Amazon"]
     - amzn2_extras_file_stat.stat.exists
@@ -119,6 +120,7 @@
     section: "{{ item.section }}"
     option: enabled
     value: 1
+    mode: 0644
   become: true
   when: is_ostree
   loop: