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/gvisor/molecule/default/prepare.yml

@@ -5,7 +5,7 @@
   roles:
     - role: kubespray-defaults
     - role: bootstrap-os
-    - role: ../adduser
+    - role: adduser
       user: "{{ addusers.kube }}"
   tasks:
     - include_tasks: "../../../../download/tasks/download_file.yml"
@@ -20,8 +20,8 @@
     kube_network_plugin: cni
   roles:
     - role: kubespray-defaults
-    - role: ../network_plugin/cni
-    - role: crictl
+    - role: network_plugin/cni
+    - role: container-engine/crictl
   tasks:
     - name: Copy test container files
       copy: