new IP trunk migration

Add IP trunk migration, including a refactor of the IP trunk model

gso/products/product_blocks/router.py

@@ -4,9 +4,9 @@ from typing import Optional
 
 from orchestrator.domain.base import ProductBlockModel
 from orchestrator.types import SubscriptionLifecycle, strEnum
-from pydantic import ConstrainedInt
 
 from gso.products.product_blocks.site import SiteBlock, SiteBlockInactive, SiteBlockProvisioning
+from gso.products.shared import PortNumber
 
 
 class RouterVendor(strEnum):
@@ -24,16 +24,6 @@ class RouterRole(strEnum):
     AMT = "amt"
 
 
-class PortNumber(ConstrainedInt):
-    """Constrained integer for valid port numbers.
-
-    The range from 49152 to 65535 is marked as ephemeral, and can therefore not be selected for permanent allocation.
-    """
-
-    gt = 0
-    le = 49151
-
-
 class RouterBlockInactive(
     ProductBlockModel, lifecycle=[SubscriptionLifecycle.INITIAL], product_block_name="RouterBlock"
 ):