ModuleNotFound: azure.core.rest devops azure cli task

**Related command**
$runId=az datafactory pipeline create-run --factory-name test-adf --name "pl_load_training_data" --resource-group test-rg --query "runId" --output tsv

**Describe the bug**
We have a devops pipeline which has an azure cli task that triggers and adf pipeline. All was working untill last friday but now the same task started giving error: ModuleNotFound: azure.core.rest.

I have added azure-core to [requirements.txt](http://requirements.txt/) and running pip list | grep auzre-core also list that it is installed.

**To Reproduce**
Try triggering an adf pipeline via azure devops cli task

**Expected behavior**
Should return a runId of the triggered pipeline

**Environment summary**

**Additional context**