feat: DA updates:<br>- add default value for prefix using random string generator<br>- Updated the default value of existing_resource_group_name to be "Default" (#486)

Co-authored-by: shemau <shemau@gmail.com>

Author: ocofaigh

ibm_catalog.json

@@ -131,12 +131,22 @@
                 "config_constraints": {
                   "identifier": "rg_name"
                 }
-              },
-              "default_value": "Default",
-              "description": "The name of an existing resource group to provision the resources."
+              }
             },
             {
-              "key": "prefix"
+              "key": "prefix",
+              "required": true,
+              "default_value": "dev",
+              "random_string": {
+                "length": 4
+              },
+              "value_constraints": [
+                {
+                  "type": "regex",
+                  "description": "Prefix must begin with a lowercase letter and may contain only lowercase letters, digits, and hyphens '-'. It must not end with a hyphen ('-'), and cannot contain consecutive hyphens ('--'). It should not exceed 16 characters.",
+                  "value": "^$|^__NULL__$|^[a-z](?!.*--)(?:[a-z0-9-]{0,14}[a-z0-9])?$"
+                }
+              ]
             },
             {
               "key": "region",
@@ -474,12 +484,22 @@
                 "config_constraints": {
                   "identifier": "rg_name"
                 }
-              },
-              "default_value": "Default",
-              "description": "The name of an existing resource group to provision the resources."
+              }
             },
             {
-              "key": "prefix"
+              "key": "prefix",
+              "required": true,
+              "default_value": "dev",
+              "random_string": {
+                "length": 4
+              },
+              "value_constraints": [
+                {
+                  "type": "regex",
+                  "description": "Prefix must begin with a lowercase letter and may contain only lowercase letters, digits, and hyphens '-'. It must not end with a hyphen ('-'), and cannot contain consecutive hyphens ('--'). It should not exceed 16 characters.",
+                  "value": "^$|^__NULL__$|^[a-z](?!.*--)(?:[a-z0-9-]{0,14}[a-z0-9])?$"
+                }
+              ]
             },
             {
               "key": "region",

solutions/fully-configurable/variables.tf

@@ -10,14 +10,14 @@ variable "ibmcloud_api_key" {
 
 variable "existing_resource_group_name" {
   type        = string
-  description = "The name of an existing resource group to provision the resources. If not provided the default resource group will be used."
-  default     = null
+  description = "The name of an existing resource group to provision the resources. [Learn more](https://cloud.ibm.com/docs/account?topic=account-rgs&interface=ui#create_rgs) about how to create a resource group."
+  default     = "Default"
 }
 
 variable "prefix" {
   type        = string
   nullable    = true
-  description = "The prefix to be added to all resources created by this solution. To skip using a prefix, set this value to null or an empty string. The prefix must begin with a lowercase letter and may contain only lowercase letters, digits, and hyphens '-'. It should not exceed 16 characters, must not end with a hyphen('-'), and can not contain consecutive hyphens ('--'). Example: prod-0205-cos. [Learn more](https://terraform-ibm-modules.github.io/documentation/#/prefix.md)."
+  description = "The prefix to add to all resources that this solution creates (e.g `prod`, `test`, `dev`). To skip using a prefix, set this value to `null` or an empty string. [Learn more](https://terraform-ibm-modules.github.io/documentation/#/prefix.md)."
 
   validation {
     # - null and empty string is allowed

solutions/security-enforced/variables.tf

@@ -10,14 +10,14 @@ variable "ibmcloud_api_key" {
 
 variable "existing_resource_group_name" {
   type        = string
-  description = "The name of an existing resource group to provision the resources. If not provided the default resource group will be used."
-  default     = null
+  description = "The name of an existing resource group to provision the resources. [Learn more](https://cloud.ibm.com/docs/account?topic=account-rgs&interface=ui#create_rgs) about how to create a resource group."
+  default     = "Default"
 }
 
 variable "prefix" {
   type        = string
   nullable    = true
-  description = "The prefix to be added to all resources created by this solution. To skip using a prefix, set this value to null or an empty string. The prefix must begin with a lowercase letter and may contain only lowercase letters, digits, and hyphens '-'. It should not exceed 16 characters, must not end with a hyphen('-'), and can not contain consecutive hyphens ('--'). Example: prod-0205-cos. [Learn more](https://terraform-ibm-modules.github.io/documentation/#/prefix.md)."
+  description = "The prefix to add to all resources that this solution creates (e.g `prod`, `test`, `dev`). To skip using a prefix, set this value to `null` or an empty string. [Learn more](https://terraform-ibm-modules.github.io/documentation/#/prefix.md)."
 
   validation {
     # - null and empty string is allowed