ExternalGroup: Fix import tfstate for external group (#846)

* WIP: test for external group

* add: read teamid in externalgroup resource read

* test to verify import is correct

internal/resources/grafana/resource_team_external_group.go

@@ -67,6 +67,7 @@ func ReadTeamExternalGroup(ctx context.Context, d *schema.ResourceData, meta int
 	for _, teamGroup := range teamGroups {
 		groupIDs = append(groupIDs, teamGroup.GroupID)
 	}
+	d.Set("team_id", teamID)
 	d.Set("groups", groupIDs)
 
 	return diag.Diagnostics{}

internal/resources/grafana/resource_team_external_group_test.go

@@ -41,6 +41,11 @@ func TestAccTeamExternalGroup_basic(t *testing.T) {
 					),
 				),
 			},
+			{
+				ResourceName:      "grafana_team_external_group.test",
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
 		},
 	})
 }