Feast v0.3.8

Release v0.5.1 (feast-dev#781)

Co-authored-by: Khor Shu Heng <khor.heng@gojek.com>

Release v0.5 (feast-dev#717)

Release v0.3.7 (feast-dev#670)

* Release v0.3.7

* Remove SNAPSHOT from e2e tests

* Find jar version from Maven

Serving should not throw exception when key not found in Redis

Redis Write Patch

Feast ingestion patch - redis retries, filter out extra fields