Add support for Elasticsearch Platinum

.secrets.baseline

@@ -2119,6 +2119,16 @@
         "verified_result": null
       }
     ],
+    "ibm/service/database/resource_ibm_database_elasticsearch_platinum_test.go": [
+      {
+        "hashed_secret": "10c28f9cf0668595d45c1090a7b4a2ae98edfa58",
+        "is_secret": false,
+        "is_verified": false,
+        "line_number": 779,
+        "type": "Secret Keyword",
+        "verified_result": null
+      }
+    ],
     "ibm/service/database/resource_ibm_database_elasticsearch_test.go": [
       {
         "hashed_secret": "10c28f9cf0668595d45c1090a7b4a2ae98edfa58",

ibm/service/database/resource_ibm_database.go

@@ -838,7 +838,7 @@ func ResourceIBMICDValidator() *validate.ResourceValidator {
 			Identifier:                 "plan",
 			ValidateFunctionIdentifier: validate.ValidateAllowedStringValue,
 			Type:                       validate.TypeString,
-			AllowedValues:              "standard, enterprise, enterprise-sharding",
+			AllowedValues:              "standard, enterprise, enterprise-sharding, platinum",
 			Required:                   true})
 	validateSchema = append(validateSchema,
 		validate.ValidateSchema{
@@ -916,6 +916,10 @@ func getDefaultScalingGroups(_service string, _plan string, meta interface{}) (g
 		service = "mongodbee"
 	}
 
+	if service == "elasticsearch" && _plan == "platinum" {
+		service = "elasticsearchpl"
+	}
+
 	if service == "mongodb" && _plan == "enterprise-sharding" {
 		service = "mongodbees"
 	}