fix ansible 2.8 bool vars

tasks/prepare.yml

@@ -48,4 +48,4 @@
       no_log: True
       when: droneci_postgres_user is defined
   delegate_to: "{{ droneci_postgres_server }}"
-  when: droneci_postgres_enabled
+  when: droneci_postgres_enabled | bool

templates/nginx/vhost.j2

@@ -8,7 +8,7 @@ server {
     listen 80;
     server_name {{ droneci_server_name | urlsplit('hostname') }};
 
-    {% if droneci_nginx_tls_enabled %}
+    {% if droneci_nginx_tls_enabled | bool %}
     return 301 https://$server_name$request_uri;
     {% else %}
     location / {
@@ -22,7 +22,7 @@ server {
     {% endif %}
 }
 
-{% if droneci_nginx_tls_enabled %}
+{% if droneci_nginx_tls_enabled | bool %}
 server {
     listen              443 ssl;
     server_name         {{ droneci_server_name | urlsplit('hostname') }};

templates/services/droneci-compose.yml.j2

@@ -9,7 +9,7 @@ services:
     ports:
       - {{ droneci_server_exposed_ip + ':' if droneci_server_exposed_ip is defined else '' }}{{ droneci_server_exposed_port }}:80
     volumes:
-      {% if not droneci_postgres_enabled %}
+      {% if not droneci_postgres_enabled | bool %}
       - droneserver-data:/var/lib/drone/
       {% endif %}
       {% if droneci_license_key is defined %}
@@ -33,11 +33,11 @@ services:
       - DRONE_LOGS_COLOR=true
       - DRONE_LOGS_PRETTY=true
       - DRONE_TLS_AUTOCERT=false
-      {% if droneci_postgres_enabled %}
+      {% if droneci_postgres_enabled | bool %}
       - DRONE_DATABASE_DRIVER=postgres
       - DRONE_DATABASE_DATASOURCE=postgres://{{ droneci_postgres_user.name }}:{{ droneci_postgres_user.password }}@{{ droneci_postgres_server }}/{{ droneci_postgres_db.name }}?sslmode={{ droneci_postgres_ssl_mode }}
       {% endif %}
-      {% if droneci_gitea_enabled %}
+      {% if droneci_gitea_enabled | bool %}
       - DRONE_GITEA_SERVER={{ droneci_gitea_server }}
       - DRONE_GITEA_SKIP_VERIFY={{ droneci_gitea_skip_verify | lower }}
       {% if droneci_gitea_oauth_client_id is defined and droneci_gitea_oauth_client_secret is defined %}
@@ -85,7 +85,7 @@ services:
     mem_reservation: {{ droneci_agent_memory_reservation }}
     {% endif %}
 
-{% if not droneci_postgres_enabled %}
+{% if not droneci_postgres_enabled | bool %}
 volumes:
   droneserver-data:
 {% endif %}