Add AppMesh Route data source

.changelog/26695.txt

@@ -0,0 +1,11 @@
+```release-note:new-data-source
+aws_appmesh_route
+```
+
+```release-note:bug
+data-source/aws_appmesh_mesh: Don't attempt to list tags if the current AWS account is not the mesh owner
+```
+
+```release-note:bug
+data-source/aws_appmesh_virtual_service: Don't attempt to list tags if the current AWS account is not the mesh owner
+```

internal/service/appmesh/appmesh_test.go

@@ -23,11 +23,13 @@ func TestAccAppMesh_serial(t *testing.T) {
 		},
 		"Mesh": {
 			"basic":                    testAccMesh_basic,
+			"disappears":               testAccMesh_disappears,
 			"egressFilter":             testAccMesh_egressFilter,
 			"tags":                     testAccMesh_tags,
 			"dataSourceBasic":          testAccMeshDataSource_basic,
 			"dataSourceMeshOwner":      testAccMeshDataSource_meshOwner,
 			"dataSourceSpecAndTagsSet": testAccMeshDataSource_specAndTagsSet,
+			"dataSourceShared":         testAccMeshDataSource_shared,
 		},
 		"Route": {
 			"disappears":              testAccRoute_disappears,
@@ -48,6 +50,10 @@ func TestAccAppMesh_serial(t *testing.T) {
 			"tcpRouteWithPortMatch":   testAccRoute_tcpRouteWithPortMatch,
 			"tcpRouteTimeout":         testAccRoute_tcpRouteTimeout,
 			"tags":                    testAccRoute_tags,
+			"dataSourceHTTP2Route":    testAccRouteDataSource_http2Route,
+			"dataSourceHTTPRoute":     testAccRouteDataSource_httpRoute,
+			"dataSourceGRPCRoute":     testAccRouteDataSource_grpcRoute,
+			"dataSourceTCPRoute":      testAccRouteDataSource_tcpRoute,
 		},
 		"VirtualGateway": {
 			"basic":                      testAccVirtualGateway_basic,