Add methods to offline/online stores to specify supported upstream sources

[achals]

Signed-off-by: Achal Shah achals@gmail.com

What this PR does / why we need it:

We need a way for Online and Offline stores to be explicit about what upstream sources are supported. This was added in #1552 but removed in #1649. This PR adds it back in.

Does this PR introduce a user-facing change?:

NONE

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[codecov-commenter]

Codecov Report

Merging #1662 (0635221) into master (2013c04) will decrease coverage by 12.08%.
The diff coverage is 74.28%.

@@             Coverage Diff             @@
##           master    #1662       +/-   ##
===========================================
- Coverage   84.05%   71.97%   -12.09%     
===========================================
  Files          72       71        -1     
  Lines        6273     6247       -26     
===========================================
- Hits         5273     4496      -777     
- Misses       1000     1751      +751     

Flag	Coverage Δ
integrationtests	?
unittests	71.97% <74.28%> (-0.06%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
sdk/python/feast/repo_operations.py	31.06% <0.00%> (-0.31%)	⬇️
sdk/python/feast/infra/offline_stores/bigquery.py	31.18% <75.00%> (-55.88%)	⬇️
sdk/python/feast/infra/offline_stores/file.py	95.83% <75.00%> (-1.01%)	⬇️
sdk/python/feast/infra/online_stores/datastore.py	31.66% <75.00%> (-47.33%)	⬇️
sdk/python/feast/infra/online_stores/redis.py	30.08% <75.00%> (-61.88%)	⬇️
sdk/python/feast/infra/online_stores/sqlite.py	94.04% <75.00%> (-2.34%)	⬇️
sdk/python/feast/repo_config.py	93.49% <84.61%> (-2.91%)	⬇️
sdk/python/tests/test_online_retrieval.py	17.39% <0.00%> (-82.61%)	⬇️
sdk/python/tests/online_read_write_test.py	20.00% <0.00%> (-80.00%)	⬇️
sdk/python/tests/test_cli_gcp.py	31.70% <0.00%> (-68.30%)	⬇️
... and 25 more

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[tsotnet]

Why does online store need to define which offline stores to support? The online store and offline store do no interact with each other directly.

I'd say let providers define which online store & offline store they support.

[achals]

Why does online store need to define which offline stores to support? The online store and offline store do no interact with each other directly.

I'd say let providers define which online store & offline store they support.

Spoke offline - I'm going to scrap this PR because there's no explicitly unsupported combination at the moment. We should wait until the need for this kind of API emerges, possibly after we have an AWS provider.