updated readme and removed defauts in variables

Author: githubofkrishnadhas

user-assigned-managed-identity/README.md

@@ -14,10 +14,10 @@ Basic usage of this module is as follows:
 	 # Optional variables
       	 application_name  = "devwithkrishna"
       	 environment  = "DEV"
-      	 location  = "centralindia"
-      	 managed_identity_name  = "test"
-      	 resource_group_name  = "testrg"
-      	 temporary  = "TRUE"
+      	 location  = ""
+      	 managed_identity_name  = ""
+      	 resource_group_name  = ""
+      	 temporary  = ""
     }
   ```
 

user-assigned-managed-identity/variables.tf

@@ -1,17 +1,17 @@
 variable "resource_group_name" {
-  default     = "testrg"
+  default     = ""
   description = "Azure resource group name to create managed identity"
   type        = string
 }
 
 variable "managed_identity_name" {
-  default     = "test"
+  default     = ""
   description = "Name of user assigned managed identity in Azure"
   type        = string
 }
 
 variable "location" {
-  default     = "centralindia"
+  default     = ""
   description = "Azure location"
   type        = string
 }