Switch Alibaba tests to use Mocks

[potiuk]

We should also take a look if there is a way to mock the calls rather than having to communicate with the reaal "Alibaba Cloud". This way our unit tests would be even more stable. For AWS we are using moto library. Seems that Alibaba has built-in way to use Mock server as backend (?) https://www.alibabacloud.com/help/doc-detail/48978.htm

CC: @Gabriel39 -> would you like to pick on that task? We had a number of transient failures of the unit tests over the last week - cause the unit tests were actually reaching out to cn-hengzou Alibaba region's servers, which has a lot of stability issues. I am switching to us-east-1 in #17616 but ideally we should not reach out to "real" services in unit tests (we are working on standardizing system tests that will do that and reach-out to real services but it should not be happening for unit tests).

[potiuk]

Can I assign you that one @Gabriel39 ?

[Gabriel39]

OK, I'll take this task and will submit next PR in next few days. :)

[eladkal]

@Gabriel39 are you still working on it?

[EricGao888]

We should also take a look if there is a way to mock the calls rather than having to communicate with the reaal "Alibaba Cloud". This way our unit tests would be even more stable. For AWS we are using moto library. Seems that Alibaba has built-in way to use Mock server as backend (?) https://www.alibabacloud.com/help/doc-detail/48978.htm

CC: @Gabriel39 -> would you like to pick on that task? We had a number of transient failures of the unit tests over the last week - cause the unit tests were actually reaching out to cn-hengzou Alibaba region's servers, which has a lot of stability issues. I am switching to us-east-1 in #17616 but ideally we should not reach out to "real" services in unit tests (we are working on standardizing system tests that will do that and reach-out to real services but it should not be happening for unit tests).

Maybe we could just simply @mock.patch this get_connection() function in unit tests and there will be no need to connect to a real oss. I'd like to work on this issue if currently there's no one working on this. Please assign it to me, thx : )

[potiuk]

Feel Free!