added template site param handling

gso/services/resource_manager.py

 # mypy: ignore-errors
 from enum import Enum, auto
-from typing import List
+from typing import List, Set
 
 from gso import settings
 
@@ -16,27 +16,45 @@ class InterfaceAllocationState(Enum):
     ALLOCATED = auto()
 
 
-def _dummy_router_interfaces():
+def _dummy_router_interfaces(site_name) -> dict:
     return {
+        "site": site_name,
         "lags": [],
         "physical": [{"name": f"ifc-{x}", "state": InterfaceAllocationState.AVAILABLE} for x in range(250)],
     }
 
+_DUMMY_SITES = {
+    "site-a",
+    "site-b",
+    "site-c"
+}
 
 _DUMMY_INVENTORY = {
-    "fqdn-a": _dummy_router_interfaces(),
-    "fqdn-b": _dummy_router_interfaces(),
-    "fqdn-c": _dummy_router_interfaces(),
-    "fqdn-d": _dummy_router_interfaces(),
+    "fqdn-a": _dummy_router_interfaces("site-a"),
+    "fqdn-b": _dummy_router_interfaces("site-a"),
+    "fqdn-c": _dummy_router_interfaces("site-b"),
+    "fqdn-d": _dummy_router_interfaces("site-b"),
+    "fqdn-e": _dummy_router_interfaces("site-c"),
+    "fqdn-f": _dummy_router_interfaces("site-c")
 }
 
 
-def import_new_router(new_router_fqdn: str, oss_params=settings.OSSParams):
+def import_new_site(new_site_name: str, oss_params=settings.OSSParams):
+    # TODO: this is a dummy implementation
+    assert new_site_name not in _DUMMY_SITES
+    _DUMMY_SITES.add(new_site_name)
+
+
+def import_new_router(
+        new_router_fqdn: str,
+        site_name: str,
+        oss_params=settings.OSSParams):
     # TODO: this is a dummy implementation
 
-    # TODO: specifiy if this should be an error (and if now, what it means)
+    # TODO: specify if this should be an error (and if not, what it means)
+    assert site_name in _DUMMY_SITES
     assert new_router_fqdn not in _DUMMY_INVENTORY
-    _DUMMY_INVENTORY[new_router_fqdn] = _dummy_router_interfaces()
+    _DUMMY_INVENTORY[new_router_fqdn] = _dummy_router_interfaces(site_name)
 
 
 def next_lag(router_fqdn: str, oss_params=settings.OSSParams) -> str: