Feature/reporting 307 msr vpn proxy endpoint

Adds /msr/vpn-proxy endpoint

inventory_provider/routes/msr.py

@@ -1045,22 +1045,19 @@ def mdvpn():
             yield formatted_peering
 
     def _vpnrr_peerings(asn, vpnrr_index):
-        if asn in vpnrr_index:
-            vrr_peering_group = vpnrr_index[asn]
-            # rearrange into index using ipv4 as key
-            # this will collect related entries under the same ipv4
-            ip_index = _make_group_index(vrr_peering_group, 'address')
-            for ip in ip_index:
-                ip_details = ip_index[ip]  # a list of all info for given ipv4
-                hostnames = [item['hostname'] for item in ip_details]
-                description = ip_details[0]['description']
+        # rearrange into index using ipv4 as key
+        # this will collect related entries under the same ipv4
+        ip_index = _make_group_index(vpnrr_index.get(asn, []), 'address')
+        for ip, ip_details in ip_index.items():
+            hostnames = [item['hostname'] for item in ip_details]
+            description = ip_details[0]['description']
 
-                formatted_peering = {
-                    "description": _get_consistent_description(description),
-                    "v4": ip,
-                    "hostname": hostnames
-                }
-                yield formatted_peering
+            formatted_peering = {
+                "description": _get_consistent_description(description),
+                "v4": ip,
+                "hostname": hostnames
+            }
+            yield formatted_peering
 
     def _peerings_for_nren(asn, bgplu_index, vpnrr_index):
         return {
@@ -1166,8 +1163,6 @@ def vpn_proxy():
                     "v4": peering.get("address")
                 }
                 yield formatted_peering
-            else:
-                yield False
 
     r = common.get_current_redis()
     cache_key = 'classifier-cache:msr:vpn-proxy'
@@ -1175,6 +1170,6 @@ def vpn_proxy():
     if not response:
         vpnproxy = json.loads(
             r.get('juniper-peerings:logical-system:VPN-PROXY').decode('utf-8'))
-        peerings = list(filter(None, _format_peerings(vpnproxy)))
+        peerings = list(_format_peerings(vpnproxy))
         response = json.dumps(peerings)
     return Response(response, mimetype='application/json')