remove_node: rename role to galaxy naming convention (#13552)

roles/remove_node/remove_etcd_node/tasks/main.yml

@@ -0,0 +1,30 @@
+---
+- name: Remove etcd member from cluster
+  environment:
+    ETCDCTL_API: "3"
+    ETCDCTL_CERT: "{{ kube_cert_dir + '/etcd/server.crt' if etcd_deployment_type == 'kubeadm' else etcd_cert_dir + '/admin-' + groups['etcd'] | first + '.pem' }}"
+    ETCDCTL_KEY: "{{ kube_cert_dir + '/etcd/server.key' if etcd_deployment_type == 'kubeadm' else etcd_cert_dir + '/admin-' + groups['etcd'] | first + '-key.pem' }}"
+    ETCDCTL_CACERT: "{{ kube_cert_dir + '/etcd/ca.crt' if etcd_deployment_type == 'kubeadm' else etcd_cert_dir + '/ca.pem' }}"
+    ETCDCTL_ENDPOINTS: "https://127.0.0.1:2379"
+  delegate_to: "{{ groups['etcd'] | first }}"
+  block:
+  - name: Lookup members infos
+    command: "{{ bin_dir }}/etcdctl member list -w json"
+    register: etcd_members
+    changed_when: false
+    check_mode: false
+    tags:
+    - facts
+  - name: Remove member from cluster
+    command:
+      argv:
+      - "{{ bin_dir }}/etcdctl"
+      - member
+      - remove
+      - "{{ '%x' | format(etcd_removed_nodes[0].ID) }}"
+    vars:
+      etcd_removed_nodes: "{{ (etcd_members.stdout | from_json).members | selectattr('peerURLs.0', '==', etcd_peer_url) }}"
+      # This should always have at most one member, since the etcd_peer_url should be unique in the etcd cluster
+    when: etcd_removed_nodes != []
+    register: etcd_removal_output
+    changed_when: "'Removed member' in etcd_removal_output.stdout"