Added  validation

tasks/main.yml

diff --git a/tasks/main.yml b/tasks/main.yml
index 1977ee9..c9b093d 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -1,11 +1,5 @@
 ---
 # tasks file for apigee-opdk-set-reachable
-#- name: Check for running server
-- name: Validate that server_type was provided
-  fail:
-    msg: "Please provide the server_type"
-  when: server_type is not defined
-
 - block:
   - name: Check for {{ server_type }} self report
     opdk_server_self: