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/reset/tasks/main.yml

@@ -86,7 +86,7 @@
   when:
     - crictl.stat.exists
     - container_manager in ["crio", "containerd"]
-  ignore_errors: true
+  ignore_errors: true  # noqa ignore-errors
 
 - name: reset | force remove all cri containers
   command: "{{ bin_dir }}/crictl rm -a -f"
@@ -129,7 +129,7 @@
   when:
     - crictl.stat.exists
     - container_manager == "containerd"
-  ignore_errors: true
+  ignore_errors: true  # noqa ignore-errors
 
 - block:
     - name: reset | force remove all cri pods
@@ -206,7 +206,7 @@
 
 - name: Clear IPVS virtual server table
   command: "ipvsadm -C"
-  ignore_errors: yes
+  ignore_errors: true  # noqa ignore-errors
   when:
     - kube_proxy_mode == 'ipvs' and inventory_hostname in groups['k8s_cluster']
 
@@ -306,7 +306,7 @@
     - /etc/modules-load.d/kube_proxy-ipvs.conf
     - /etc/modules-load.d/kubespray-br_netfilter.conf
     - /usr/libexec/kubernetes
-  ignore_errors: yes
+  ignore_errors: true  # noqa ignore-errors
   tags:
     - files
 
@@ -333,7 +333,7 @@
     - dns
 
 - name: reset | include file with reset tasks specific to the network_plugin if exists
-  include_tasks: "{{ (role_path + '/../network_plugin/' + kube_network_plugin + '/tasks/reset.yml') | realpath  }}"
+  include_tasks: "{{ (role_path,'../network_plugin',kube_network_plugin,'tasks/reset.yml') | path_join | realpath  }}"
   when:
     - kube_network_plugin in ['flannel', 'cilium', 'kube-router', 'calico']
   tags: