Compress built docs before upload (#4246)
Compress built docs before upload (#4246)

* Add parallel option to docs upload

Right now the compiled docs upload to the artifact store is a bottleneck
for a CI throughput. In an attempt to speed it up this commit sets the
parallel option on the task [1]. This will hopefully reduce the amount
of time spent uploading files to the artifact store.

[1] https://docs.microsoft.com/en-us/azure/devops/pipelines/tasks/utility/publish-build-artifacts?view=azure-devops

* Archive docs prior to upload

Parallel upload did not speed up the upload task noticeably. This commit
adds a new step to try compressing the docs prior to uploading. This
should hopefully result in a faster execution time.
QISKit/qiskit-sdk-py,QISKit/qiskit-sdk-py,QISKit/qiskit-sdk-py