feast apply and Google Datastore dependency

[SaschaHeyer]

Expected Behavior

Running feast apply works without errors

Current Behavior

Running feast apply runns into an error if client library is not installed https://cloud.google.com/datastore/docs/reference/libraries#client-libraries-install-python

cannot import name 'datastore' from 'google.cloud'

We should mention this dependency in the documentation.

Steps to reproduce

1. Run feast apply in an environment where the datastore client library is not installed

Specifications

• Version: 0.10.0
• Platform: Mac
• Subsystem:

Possible Solution

Install it with pip install --upgrade google-cloud-datastore

[woop]

Good catch. Thanks @SaschaHeyer!

[diogommartins]

Relates to #1560

[stale]

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