fixup! Sync release leadership on stop

spec/etcd_spec.cr

@@ -75,11 +75,9 @@ describe LavinMQ::Etcd do
     cluster.run do |etcds|
       etcd = LavinMQ::Etcd.new(cluster.endpoints)
       key = "foo/#{rand}"
-      lease = etcd.elect(key, "bar", 1)
+      lease = etcd.elect(key, "bar", ttl: 1)
       etcds.first(2).each &.terminate(graceful: false)
-      unless lease.wait(15.seconds)
-        fail "should lose the leadership"
-      end
+      lease.wait(15.seconds).should be_true, "should lose the leadership"
     end
   end
 
@@ -88,11 +86,9 @@ describe LavinMQ::Etcd do
     cluster.run do |etcds|
       etcd = LavinMQ::Etcd.new(cluster.endpoints)
       key = "foo/#{rand}"
-      lease = etcd.elect(key, "bar", 1)
+      lease = etcd.elect(key, "bar", ttl: 1)
       etcds.sample.terminate(graceful: false)
-      unless lease.wait(6.seconds)
-        fail "should not lose the leadership"
-      end
+      lease.wait(6.seconds).should be_false, "should not lose the leadership"
     end
   end