ImportStateVerify is not compatible with custom diff (#7813) (#5580)

Signed-off-by: Modular Magician <[email protected]>

Author: modular-magician

.changelog/7813.txt

@@ -0,0 +1,3 @@
+```release-note:none
+
+```

google-beta/resource_bigtable_instance_test.go

@@ -68,16 +68,17 @@ func TestAccBigtableInstance_cluster(t *testing.T) {
 				ResourceName:            "google_bigtable_instance.instance",
 				ImportState:             true,
 				ImportStateVerify:       true,
-				ImportStateVerifyIgnore: []string{"deletion_protection", "instance_type"}, // we don't read instance type back
+				ImportStateVerifyIgnore: []string{"deletion_protection", "instance_type", "cluster"}, // we don't read instance type back
 			},
 			{
 				Config: testAccBigtableInstance_clusterReordered(instanceName, 5),
 			},
 			{
 				ResourceName:            "google_bigtable_instance.instance",
 				ImportState:             true,
+				PlanOnly:                true,
 				ImportStateVerify:       true,
-				ImportStateVerifyIgnore: []string{"deletion_protection", "instance_type"}, // we don't read instance type back
+				ImportStateVerifyIgnore: []string{"deletion_protection", "instance_type", "cluster"}, // we don't read instance type back
 			},
 			{
 				Config: testAccBigtableInstance_clusterModified(instanceName, 5),
@@ -86,16 +87,17 @@ func TestAccBigtableInstance_cluster(t *testing.T) {
 				ResourceName:            "google_bigtable_instance.instance",
 				ImportState:             true,
 				ImportStateVerify:       true,
-				ImportStateVerifyIgnore: []string{"deletion_protection", "instance_type"}, // we don't read instance type back
+				ImportStateVerifyIgnore: []string{"deletion_protection", "instance_type", "cluster"}, // we don't read instance type back
 			},
 			{
 				Config: testAccBigtableInstance_clusterReordered(instanceName, 5),
 			},
 			{
 				ResourceName:            "google_bigtable_instance.instance",
 				ImportState:             true,
+				PlanOnly:                true,
 				ImportStateVerify:       true,
-				ImportStateVerifyIgnore: []string{"deletion_protection", "instance_type"}, // we don't read instance type back
+				ImportStateVerifyIgnore: []string{"deletion_protection", "instance_type", "cluster"}, // we don't read instance type back
 			},
 			{
 				Config: testAccBigtableInstance_clusterModifiedAgain(instanceName, 5),
@@ -104,7 +106,7 @@ func TestAccBigtableInstance_cluster(t *testing.T) {
 				ResourceName:            "google_bigtable_instance.instance",
 				ImportState:             true,
 				ImportStateVerify:       true,
-				ImportStateVerifyIgnore: []string{"deletion_protection", "instance_type"}, // we don't read instance type back
+				ImportStateVerifyIgnore: []string{"deletion_protection", "instance_type", "cluster"}, // we don't read instance type back
 			},
 		},
 	})