Update sql_user type (#10835) (#18452)

[upstream:808def1f5573d57add94260a6000315c3ce2c58d]

Signed-off-by: Modular Magician <magic-modules@google.com>

.changelog/10835.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+sql: added support for more MySQL values in `google_sql_user.type`
+```

google/services/sql/resource_sql_user.go

@@ -95,7 +95,7 @@ func ResourceSqlUser() *schema.Resource {
 				Optional:  true,
 				Sensitive: true,
 				Description: `The password for the user. Can be updated. For Postgres instances this is a Required field, unless type is set to
-                either CLOUD_IAM_USER or CLOUD_IAM_SERVICE_ACCOUNT.`,
+				either CLOUD_IAM_USER or CLOUD_IAM_SERVICE_ACCOUNT.`,
 			},
 
 			"type": {
@@ -104,8 +104,7 @@ func ResourceSqlUser() *schema.Resource {
 				ForceNew:         true,
 				DiffSuppressFunc: tpgresource.EmptyOrDefaultStringSuppress("BUILT_IN"),
 				Description: `The user type. It determines the method to authenticate the user during login.
-                The default is the database's built-in user type. Flags include "BUILT_IN", "CLOUD_IAM_USER", "CLOUD_IAM_GROUP" or "CLOUD_IAM_SERVICE_ACCOUNT".`,
-				ValidateFunc: validation.StringInSlice([]string{"BUILT_IN", "CLOUD_IAM_USER", "CLOUD_IAM_GROUP", "CLOUD_IAM_SERVICE_ACCOUNT", ""}, false),
+				The default is the database's built-in user type.`,
 			},
 			"sql_server_user_details": {
 				Type:     schema.TypeList,

website/docs/r/sql_user.html.markdown

@@ -119,7 +119,9 @@ The following arguments are supported:
 
 * `type` - (Optional) The user type. It determines the method to authenticate the
     user during login. The default is the database's built-in user type. Flags
-    include "BUILT_IN", "CLOUD_IAM_USER", "CLOUD_IAM_GROUP" or "CLOUD_IAM_SERVICE_ACCOUNT".
+    include "BUILT_IN", "CLOUD_IAM_USER", and "CLOUD_IAM_SERVICE_ACCOUNT" for both 
+    [Postgres](https://cloud.google.com/sql/docs/postgres/admin-api/rest/v1beta4/users#sqlusertype) and [MySQL](https://cloud.google.com/sql/docs/mysql/admin-api/rest/v1beta4/users#sqlusertype).
+    MySQL also includes "CLOUD_IAM_GROUP", "CLOUD_IAM_GROUP_USER" and "CLOUD_IAM_GROUP_SERVICE_ACCOUNT".
 
 * `deletion_policy` - (Optional) The deletion policy for the user.
     Setting `ABANDON` allows the resource to be abandoned rather than deleted. This is useful