initial implementation of redshift dbt_clone macros and test design a… (

#505)

* initial implementation of redshift dbt_clone macros and test design attempts

* remove dbt_clone macros that are unneeded

* add clean_up method to drop alt schema names after tests run

* change pointer back to main

.changes/unreleased/Features-20230622-144649.yaml

@@ -0,0 +1,6 @@
+kind: Features
+body: add dbt-redshift portion of dbt_clone functionality
+time: 2023-06-22T14:46:49.037145-05:00
+custom:
+  Author: McKnight-42 aranke
+  Issue: "504"

tests/functional/adapter/dbt_clone/test_dbt_clone.py

@@ -0,0 +1,20 @@
+import pytest
+from dbt.tests.adapter.dbt_clone.test_dbt_clone import BaseCloneNotPossible
+
+
+class TestRedshiftCloneNotPossible(BaseCloneNotPossible):
+    @pytest.fixture(autouse=True)
+    def clean_up(self, project):
+        yield
+        with project.adapter.connection_named("__test"):
+            relation = project.adapter.Relation.create(
+                database=project.database, schema=f"{project.test_schema}_seeds"
+            )
+            project.adapter.drop_schema(relation)
+
+            relation = project.adapter.Relation.create(
+                database=project.database, schema=project.test_schema
+            )
+            project.adapter.drop_schema(relation)
+
+    pass