Ut fails in components package

[seeflood]

What happened:
Ut fails when testing components package.
I fixed the compilation errors of the ut in #362 .
But there are still some test failures:

• fix ut for zookeeper lock . assigned to @ZLBer
• fix ut for etcd sequencer. assigned to @whalesongAndLittleFish
• modify the configuration to test components package in our CI pipeline
• fix ut for RPC

What you expected to happen:
All code pass ut successfully

How to reproduce it (as minimally and precisely as possible):

go test components

Anything else we need to know?:

[seeflood]

@ZLBer Hi, could you help fix the zookeeperLock test cases?
It seems that they are wrong from the very begining 😢

[whalesongAndLittleFish]

I want to try to fix the unit test of etcd sequencer,please assign to me

[seeflood]

@whalesongAndLittleFish Cool,Thanks!
assigned to you

[ZLBer]

@seeflood sure i will fix zk lock ut

[seeflood]

update: I just found that RPC tests are not stable and sometimes fail

[seeflood]

All fixed