Update API test template

* API is not enabled in worker nodes
* Agents must be reporting in worker nodes to test distributed API calls

.github/ISSUE_TEMPLATE/test--api.md

@@ -12,7 +12,7 @@ about: Test suite for the API.
 
 ## Installation
 
-- [ ] Install API in a cluster of two nodes. One of the nodes must be a custom directory install.
+- [ ] Install API in a cluster of two nodes. One of the nodes must be a custom directory install. All agents must report to the worker node.
 - [ ] Check API status is running in both nodes.
 
 ## Configuration
@@ -46,10 +46,3 @@ Checks:
     - [ ] CentOS 7 / Python 2.
     - [ ] CentOS 7 / Python 3.
     - [ ] CentOS 6 / Python27.
-
-- [ ] Worker node:
-    - [ ] Ubuntu 18 / Python 2.
-    - [ ] Ubuntu 18 / Python 3.
-    - [ ] CentOS 7 / Python 2.
-    - [ ] CentOS 7 / Python 3.
-    - [ ] CentOS 6 / Python27.