Add IPAM step to IPtrunk creation

At the end of the workflow, create two DNS records for both sides of the trunk.

Naming is done as <ae-interface>-0.<router-fqdn>. @simone.spinelli please verify this is correct

gso/workflows/iptrunk/create_iptrunk.py

@@ -400,6 +400,22 @@ def check_ip_trunk_isis(
     return {"subscription": subscription}
 
 
+@step("Register DNS records for both sides of the trunk")
+def register_dns_records(subscription: IptrunkInactive) -> State:
+    """Register DNS records for both sides of the newly created IPtrunk."""
+    for index, side in enumerate(subscription.iptrunk.iptrunk_sides):
+        fqdn = f"{side.iptrunk_side_ae_iface}-0.{side.iptrunk_side_node.router_fqdn}"
+        if not (subscription.iptrunk.iptrunk_ipv4_network and subscription.iptrunk.iptrunk_ipv6_network):
+            msg = f"Missing IP resources in trunk, cannot allocate DNS record for side {fqdn}!"
+            raise ValueError(msg)
+        ipv4_addr = subscription.iptrunk.iptrunk_ipv4_network[index]
+        ipv6_addr = subscription.iptrunk.iptrunk_ipv6_network[index]
+
+        infoblox.create_host_by_ip(fqdn, ipv4_addr, ipv6_addr, "TRUNK", str(subscription.subscription_id))
+
+    return {"subscription": subscription}
+
+
 @step("NextBox integration")
 def reserve_interfaces_in_netbox(subscription: IptrunkInactive) -> State:
     """Create the :term:`LAG` interfaces in NetBox and attach the lag interfaces to the physical interfaces."""
@@ -490,6 +506,7 @@ def create_iptrunk() -> StepList:
         >> pp_interaction(provision_ip_trunk_isis_iface_dry)
         >> pp_interaction(provision_ip_trunk_isis_iface_real)
         >> pp_interaction(check_ip_trunk_isis)
+        >> register_dns_records
         >> side_a_is_nokia(netbox_allocate_side_a_interfaces)
         >> side_b_is_nokia(netbox_allocate_side_b_interfaces)
         >> set_status(SubscriptionLifecycle.PROVISIONING)