[CI][Docker] pin xgboost dependency version to 0.90

[leandron]

Pin xgboost dependency version to 0.90

• Sets xgboost dependency to be 0.90, preventing
  segfaults during TVM python unit tests execution

• This is discussed in issue [CI][Docker] xgboost 1.0.1 causes segfault on test_autotvm_xgboost_model.py #4953

cc @tqchen

[leandron]

It seems the broken build reason is not specifically related to this patch.

[masahi]

hey @leandron we are in the same boat. The discussion is happening at #4961 (comment)

[leandron]

hey @leandron we are in the same boat. The discussion is happening at #4961 (comment)

Thanks @masahi, I posted my comments there.

[tqchen]

the fix #4967 has been merged, please send another commit to retrigger the CI

[tqchen]

Reopen won't trigger the case, need a dummy commit

[cchung100m]

@leandron

Please use the command below to submit a dummy commit, thanks.

git commit --allow-empty -m "Trigger CI"

[masahi]

no need to do dummy commit, just fetch and rebase against master

[leandron]

Thanks @masahi @cchung100m @tqchen

[tqchen]

Thanks @leandron this is merged.

it would be great if you and @hcho3 can followup on #4953 given that we have quite a bit of overlap between the two communities, we want to make sure the latest XGBoost and TVM works together

[leandron]

Thanks @tqchen. I'll see to provide @hcho3 with instruction on how to reproduce the issue I see on xgboost.