MT#62220 Fix counters in invite_peerout_max_out test

In the test we were setting peers max call limit to
 -1 to prevent a call to a peer
 0 to let the call go through a peer

Thsi is logically wrong and it is now fixed setting
the limits to 0 and 1.

Change-Id: Ia3ad63ea5db6981d87f402f35224703cc0a2fc73

scenarios/invite_peerout_max_out/prefs.json.tt2

@@ -3,9 +3,9 @@
         "nat_sipping": "no"
     },
     "peer_00_invite_peerout_max_out_host0": {
-        "concurrent_max_out": 0
+        "concurrent_max_out": 1
     },
     "peer_01_invite_peerout_max_out_host0": {
-        "concurrent_max_out": -1
+        "concurrent_max_out": 0
     }
 }