Missing python sdk functions & arguments (create_job, update_job, etc)

[ari-nz]

Hi, I'm trying to use the Databricks jobs API (2.1) via this python sdk services here.

Two pieces of functionality that exist in the REST api but don't seem to exist here are the ability to (1) tag created jobs and (2) the ability to reset/update a job

My assumption is that (1) should need an additional parameter here https://github.com/databricks/databricks-cli/blob/e42773022db52a90cc4bd5a0812d87b04ea7e302/databricks_cli/sdk/service.py#L37

And for (2) a new function needs to be created, similar to https://github.com/databricks/databricks-cli/blob/e42773022db52a90cc4bd5a0812d87b04ea7e302/databricks_cli/sdk/service.py#L123

[ari-nz]

I've made a pull request that adds these features #457