Added support for AWS Govcloud DoD shard

Author: airizarryDB

databricks-sdk-java/src/main/java/com/databricks/sdk/core/DatabricksEnvironment.java

@@ -50,6 +50,7 @@ public String getDeploymentUrl(String name) {
           new DatabricksEnvironment(Cloud.AWS, ".dev.databricks.com"),
           new DatabricksEnvironment(Cloud.AWS, ".staging.cloud.databricks.com"),
           new DatabricksEnvironment(Cloud.AWS, ".cloud.databricks.us"),
+          new DatabricksEnvironment(Cloud.AWS, ".cloud.databricks.mil"),
           DEFAULT_ENVIRONMENT,
           new DatabricksEnvironment(
               Cloud.AZURE,

databricks-sdk-java/src/test/java/com/databricks/sdk/core/DatabricksConfigTest.java

@@ -23,7 +23,7 @@ public void testIsAccountHost() {
   public void testIsAccountHostDod() {
     assertTrue(
         new DatabricksConfig()
-            .setHost("https://accounts-dod.cloud.databricks.us")
+            .setHost("https://accounts-dod.cloud.databricks.mil")
             .isAccountClient());
   }