Replace deprecated "include" directive in Ansible 2.4

tasks/install.yml

@@ -10,4 +10,4 @@
     when: youtrack.jail is defined
   tags: always
 
-- include: 'apache.yml'
+- include_tasks: 'apache.yml'

tasks/main.yml

@@ -9,7 +9,7 @@
 
 - block:
   - name: "Install Certs"
-    include: '../../letsencrypt/tasks/cert.yml'
+    include_tasks: '../../letsencrypt/tasks/cert.yml'
     with_items: '{{ youtrack_settings|default([]) }}'
     loop_control:
       loop_var: domain
@@ -20,7 +20,7 @@
 - block:
 
   - name: "Install"
-    include: 'install.yml'
+    include_tasks: 'install.yml'
     with_items: '{{ youtrack_settings|default([]) }}'
     loop_control:
       loop_var: youtrack