Dynamodb infra object

[felixwang9817]

What this PR does / why we need it: This PR adds DynamoDB tables as InfraObjects.

Which issue(s) this PR fixes:

Fixes #

Does this PR introduce a user-facing change?:

NONE

[codecov-commenter]

Codecov Report

Merging #2131 (2b8765a) into master (50f29cd) will decrease coverage by 25.44%.
The diff coverage is 32.65%.

@@             Coverage Diff             @@
##           master    #2131       +/-   ##
===========================================
- Coverage   83.37%   57.92%   -25.45%     
===========================================
  Files         101      101               
  Lines        8133     8162       +29     
===========================================
- Hits         6781     4728     -2053     
- Misses       1352     3434     +2082     

Flag	Coverage Δ
integrationtests	?
unittests	57.92% <32.65%> (-0.06%)	⬇️

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

Impacted Files	Coverage Δ
sdk/python/feast/infra/online_stores/dynamodb.py	35.89% <29.78%> (-55.02%)	⬇️
sdk/python/feast/infra/infra_object.py	57.50% <100.00%> (ø)
.../integration/online_store/test_online_retrieval.py	17.39% <0.00%> (-82.61%)	⬇️
.../integration/online_store/test_universal_online.py	15.34% <0.00%> (-82.33%)	⬇️
...fline_store/test_universal_historical_retrieval.py	19.29% <0.00%> (-80.12%)	⬇️
sdk/python/tests/utils/online_read_write_test.py	20.68% <0.00%> (-79.32%)	⬇️
...gration/registration/test_feature_service_apply.py	31.25% <0.00%> (-68.75%)	⬇️
sdk/python/feast/infra/online_stores/redis.py	26.97% <0.00%> (-67.11%)	⬇️
sdk/python/tests/data/data_creator.py	34.78% <0.00%> (-65.22%)	⬇️
sdk/python/tests/integration/e2e/test_usage_e2e.py	35.00% <0.00%> (-65.00%)	⬇️
... and 51 more

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[feast-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: felixwang9817, pyalex

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Needs approval from an approver in each of these files:

• OWNERS [felixwang9817]

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[pyalex]

/lgtm