Include tasks using include_tasks (#141)

When using include the variables are calculated too early

Author: ygalblum

tasks/main.yml

@@ -71,7 +71,7 @@
     - restart nomad
 
 - name: Get Gossip Key
-  include: get_gossip_key.yml
+  include_tasks: get_gossip_key.yml
   when:
     - _nomad_node_server | bool
     - nomad_encrypt_enable | bool
@@ -204,4 +204,4 @@
     name: nomad
     enabled: true
     state: started
-  when: not ansible_service_mgr == "systemd"
+  when: not ansible_service_mgr == "systemd"