Use include/import tasks (#2192)

import_tasks will consume far less memory, so it should be
used whenever it is compatible.

roles/etcd/tasks/main.yml

@@ -1,15 +1,15 @@
 ---
-- include: check_certs.yml
+- include_tasks: check_certs.yml
   when: cert_management == "script"
   tags:
     - etcd-secrets
     - facts
 
-- include: "gen_certs_{{ cert_management }}.yml"
+- include_tasks: "gen_certs_{{ cert_management }}.yml"
   tags:
     - etcd-secrets
 
-- include: upd_ca_trust.yml
+- include_tasks: upd_ca_trust.yml
   tags:
     - etcd-secrets
 
@@ -24,18 +24,18 @@
     etcd_client_cert_serial: "{{ etcd_client_cert_serial_result.stdout }}"
   when: inventory_hostname in groups['k8s-cluster']|union(groups['etcd'])|union(groups['calico-rr']|default([]))|unique|sort
 
-- include: "install_{{ etcd_deployment_type }}.yml"
+- include_tasks: "install_{{ etcd_deployment_type }}.yml"
   when: is_etcd_master
   tags:
     - upgrade
 
-- include: set_cluster_health.yml
+- import_tasks: set_cluster_health.yml
   when: is_etcd_master and etcd_cluster_setup
 
-- include: configure.yml
+- import_tasks: configure.yml
   when: is_etcd_master and etcd_cluster_setup
 
-- include: refresh_config.yml
+- import_tasks: refresh_config.yml
   when: is_etcd_master and etcd_cluster_setup
 
 - name: Restart etcd if certs changed
@@ -56,8 +56,8 @@
 # After etcd cluster is assembled, make sure that
 # initial state of the cluster is in `existing`
 # state insted of `new`.
-- include: set_cluster_health.yml
+- import_tasks: set_cluster_health.yml
   when: is_etcd_master and etcd_cluster_setup
 
-- include: refresh_config.yml
+- import_tasks: refresh_config.yml
   when: is_etcd_master and etcd_cluster_setup