Add MTU to interconnect

mmv1/products/compute/api.yaml

@@ -7338,6 +7338,11 @@ objects:
         name: 'description'
         description: |
           An optional description of this resource.
+      - !ruby/object:Api::Type::String
+        name: 'mtu'
+        description: |
+          Maximum Transmission Unit (MTU), in bytes, of packets passing through
+          this interconnect attachment. Currently, only 1440 and 1500 are allowed. If not specified, the value will default to 1440.
       - !ruby/object:Api::Type::Enum
         name: 'bandwidth'
         description: |

mmv1/templates/terraform/examples/interconnect_attachment_basic.tf.erb

@@ -2,6 +2,7 @@ resource "google_compute_interconnect_attachment" "<%= ctx[:primary_resource_id]
   name         = "<%= ctx[:vars]['interconnect_attachment_name'] %>"
   interconnect = "my-interconnect-id"
   router       = google_compute_router.foobar.id
+  mtu          = 1500
 }
 
 resource "google_compute_router" "foobar" {