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

tests/testcases/030_check-network.yml

@@ -34,7 +34,7 @@
       when: get_csr.stdout_lines | length > 0
       changed_when: certificate_approve.stdout
 
-    - debug:
+    - debug:  # noqa unnamed-task
         msg: "{{ certificate_approve.stdout.split('\n') }}"
 
     when: kubelet_rotate_server_certificates | default(false)
@@ -60,7 +60,7 @@
     - busybox1
     - busybox2
 
-  - import_role:
+  - import_role:  # noqa unnamed-task
       name: cluster-dump
 
   - name: Check that all pods are running and ready
@@ -83,7 +83,7 @@
     register: pods
     no_log: true
 
-  - debug:
+  - debug:  # noqa unnamed-task
       msg: "{{ pods.stdout.split('\n') }}"
     failed_when: not run_pods_log is success
 
@@ -92,7 +92,7 @@
             jsonpath='{range .items[?(.spec.hostNetwork)]}{.metadata.name} {.status.podIP} {.status.containerStatuses} {end}'"
     changed_when: false
     register: hostnet_pods
-    ignore_errors: true
+    ignore_errors: true  # noqa ignore-errors
     no_log: true
 
   - name: Get running pods
@@ -108,7 +108,7 @@
     register: get_pods
     no_log: true
 
-  - debug:
+  - debug:  # noqa unnamed-task
       msg: "{{ get_pods.stdout.split('\n') }}"
 
   - name: Set networking facts