fix lease-get case in refill tests

Summary: This test is consistently failing: https://fburl.com/test/duh7t68p

Reviewed By: stuclar

Differential Revision: D65275379

fbshipit-source-id: 4640e6bb11c274034919f69e65e8baaab09c0f6d

mcrouter/test/test_mcrefill.py

@@ -65,7 +65,9 @@ def test_basic_leases(self):
 
         def condition():
             stat = self.mc1.stats()
-            return stat["total_items"] == "1"
+            # this stat is bumped twice because lease-get
+            # creates a lease token item
+            return stat["total_items"] == "2"
 
         self.assert_eventually_true(condition)
         res = self.mcrouter.leaseGet(key)