poller/interfaces filters out irrelevant interfaces

There currently many interfaces returned by poller/interfaces that are irrelevant for Brian. This MR filters out irrelevant interfaces:lt so dsc fxp lo

Juniper interfaces that are still returned are xe ge et ae irb gr

No Nokia interfaces are filtered out

inventory_provider/routes/poller.py

@@ -808,10 +808,13 @@ def _get_port_type(description):
     return PORT_TYPES.UNKNOWN.name
 
 
-def load_interfaces_to_poll(
-        config, hostname=None, no_lab=False, use_next_redis=False):
-    basic_interfaces = \
-        list(_load_interfaces(config, hostname, no_lab, use_next_redis))
+def load_interfaces_to_poll(config, hostname=None, no_lab=False, use_next_redis=False):
+    def is_relevant(ifc):
+        return not re.match(r"^(lt-|so-|dsc\.|fxp\d|lo\d).*", ifc["name"])
+
+    basic_interfaces = list(
+        filter(is_relevant, _load_interfaces(config, hostname, no_lab, use_next_redis))
+    )
     bundles = _load_interface_bundles(config, hostname, use_next_redis)
     services_and_customers = \
         _get_services_and_customers(config, hostname, use_next_redis)