[grpc] Refactor footer caching logic (GoogleCloudDataproc#713)

(cherry picked from commit 39af81a)

Decrease bucket prefix to not exceed max bucket size allowed (GoogleC…

…loudDataproc#708) (GoogleCloudDataproc#711)

(cherry picked from commit 1518bae)

gson and gRPC version upgrade with bug fixes (GoogleCloudDataproc#649)

Upgrade Google Auth library to support ExternalAccount (GoogleCloudDa…

…taproc#633)

Release GCS connector 2.2.2 (GoogleCloudDataproc#579)

Fix storage stub auth for cloudpath (GoogleCloudDataproc#563)

Release GCS connector 2.2.0 and BQ connector 1.2.0.

Release GCS connector 2.1.6

Release GCS connector 2.1.5 and BQ connector 1.1.5.

Fix compatibility w/ Hadoop 1 (GoogleCloudDataproc#425)