tasks: Replace deprecated 'include' statements

Ansible 2.4+ complains that 'include' statements are deprecated in
favor of 'import_tasks' and 'include_tasks' so replace all of them.

Change-Id: Ib65187c1239482bfd823b2f3dfd437aa7a709ccd

tasks/galera_install.yml

@@ -83,7 +83,7 @@
     - galera_xtrabackup_compression | bool
     - ansible_architecture != 'x86_64'
 
-- include: "galera_install_{{ ansible_pkg_mgr }}.yml"
+- include_tasks: "galera_install_{{ ansible_pkg_mgr }}.yml"
 
 - name: Install pip packages
   pip:

tasks/galera_post_install.yml

@@ -99,7 +99,7 @@
   when:
     - log_dir.rc == 1
 
-- include: galera_ssl.yml
+- include_tasks: galera_ssl.yml
   when:
     - galera_use_ssl | bool
 

tasks/galera_ssl.yml

@@ -21,7 +21,7 @@
     group: "mysql"
     mode: "0750"
 
-- include: galera_ssl_self_signed.yml
+- include_tasks: galera_ssl_self_signed.yml
   static: no
   when:
     - not galera_user_ssl_cert is defined

tasks/galera_upgrade.yml

@@ -37,7 +37,7 @@
   tags:
     - galera_server-upgrade
 
-- include: galera_upgrade_pre.yml
+- include_tasks: galera_upgrade_pre.yml
   static: no
   when:
     - galera_upgrade | bool

tasks/main.yml

@@ -75,28 +75,28 @@
   tags:
     - always
 
-- include: galera_cluster_state.yml
+- include_tasks: galera_cluster_state.yml
   when:
     - galera_deployed | bool
     - not galera_ignore_cluster_state | bool
   tags:
     - always
 
-- include: galera_upgrade.yml
+- include_tasks: galera_upgrade.yml
   tags:
     - galera_server-upgrade
 
-- include: galera_install.yml
+- include_tasks: galera_install.yml
   tags:
     - galera_server-install
 
-- include: galera_post_install.yml
+- include_tasks: galera_post_install.yml
   tags:
     - galera_server-config
 
 - name: Flush handlers
   meta: flush_handlers
 
-- include: galera_setup.yml
+- include_tasks: galera_setup.yml
   tags:
     - galera_server-config