test: revoke keepalived lease, to avoid effect to other test (#120)

Author: Yiyiyimu

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ on:
 jobs:
   build:
     strategy:
-      fail-fast: true
+      fail-fast: false
       matrix:
         include:
           - version: 2.2.5

t/v2/dir.t

@@ -212,7 +212,7 @@ checked val as expect: b
             local cur_time = ngx.now()
             ngx.update_time()
             local res2, err = etcd:wait("/dir", res.body.node.modifiedIndex + 1, 1)
-            ngx.say("err: ", err, ", more than 1sec: ", ngx.now() - cur_time > 1)
+            ngx.say("err: ", err, ", more than 1sec: ", ngx.now() - cur_time >= 1)
 
             ngx.timer.at(1.5, function ()
                 etcd:set("/dir/a", "a")

t/v3/lease.t

@@ -182,6 +182,9 @@ deleted key as expect
                 ngx.say("Wrong lease got keepalived")
             end
 
+            local data, err = etcd:revoke(123)
+            check_res(data, err)
+
             ngx.say("all done")
         }
     }