- fix(deps): use google-gax v3.5.2
- fix: add comma

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Added a server proxy that is going to be used by the Test Framework for
Cloud Bigtable Client Libraries.

Refs: https://github.com/googleapis/cloud-bigtable-clients-test

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This PR contains the following updates:

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…will be rotated (#1194)

* build: have Kokoro grab service account credentials from secret that will be rotated

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…will be rotated for system tests (#1208)

* build: have Kokoro grab service account credentials from secret that will be rotated for system tests

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* chore(deps): update dependency sinon to v15

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Co-authored-by: danieljbruce <[email protected]>

* pipe metadata along

* Arrange imports back to where they were

* revert some automatic imports

* revert automatic import

* report metadata when it doesn’t exist yet

* should include metadata in result

* Remove only

* Removed setting metadata that is no longer used

* Add an assert fail

* Better check for metadata

* use bind instead

* revert changes for exposing metadata directly

* change stream emit metadata back

* Move obtainTestInstance into the before block for

backups

* Extend expiry time

* Revert "Extend expiry time"

This reverts commit 8d42852.

* Revert "Move obtainTestInstance into the before block for"

This reverts commit 3eb0d8f.

* Add comment for backups

* Add comments to functions file

* Move obtainTestInstance in write module

* Fix reads sample tests

* Comment adjustment

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>