consul: make WebSocket optional in Consul services

Signed-off-by: Jakub Sokołowski <jakub@status.im>

tasks/consul.yml

@@ -1,8 +1,6 @@
 ---
-- name: Geth | Create Consul service definition
-  include_role: name=consul-service
-  vars:
-    consul_config_name: '{{ geth_cont_name }}'
+- name: Geth | Consul | Define services
+  set_fact:
     consul_services:
       - name: '{{ geth_cont_name }}'
         tags: '{{ geth_consul_tags }}'
@@ -41,3 +39,14 @@
             type: 'tcp'
             tcp: 'localhost:{{ geth_websocket_port }}'
             failures_before_critical: 3
+
+- name: Geth | Consul | Remove WebSocket service
+  set_fact:
+    consul_services: |
+      {{ consul_services | rejectattr('name', 'match', '.*-ws$') | list }}
+  when: not geth_websocket_enabled
+
+- name: Geth | Consul | Create service definition
+  include_role: name=consul-service
+  vars:
+    consul_config_name: '{{ geth_cont_name }}'