Using httplib2 from PyPI in regression3.

* feat: add new v3.0.0 API skeleton (#745)

* feat: improve rows filters (#751)

* feat: read rows query model class (#752)

* feat: implement row and cell model classes (#753)

* feat: add pooled grpc transport (#748)

* feat: implement read_rows (#762)

* feat: implement mutate rows (#769)

* feat: literal value filter (#767)

* feat: row_exists and read_row (#778)

* feat: read_modify_write and check_and_mutate_row (#780)

* feat: sharded read rows (#766)

* feat: ping and warm with metadata (#810)

* feat: mutate rows batching (#770)

* chore: restructure module paths (#816)

* feat: improve timeout structure (#819)

* fix: api errors apply to all bulk mutations

* chore: reduce public api surface (#820)

* feat: improve error group tracebacks on < py11 (#825)

* feat: optimize read_rows (#852)

* chore: add user agent suffix (#842)

* feat: optimize retries (#854)

* feat: add test proxy (#836)

* chore(tests): add conformance tests to CI for v3 (#870)

* chore(tests): turn off fast fail for conformance tets (#882)

* feat: add TABLE_DEFAULTS enum for table method arguments (#880)

* fix: pass None for retry in gapic calls (#881)

* feat: replace internal dictionaries with protos in gapic calls (#875)

* chore: optimize gapic calls (#863)

* feat: expose retryable error codes to users (#879)

* chore: update api_core submodule (#897)

* chore: merge main into experimental_v3 (#900)

* chore: pin conformance tests to v0.0.2 (#903)

* fix: bulk mutation eventual success (#909)

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

In the current design, the first character of each package is used to create an alias. I'd like to append the first character before underscores in the package name to further reduce conflicts.

Previously google.appengine_admin would have an alias prefix of ga. With this change, the alias prefix will be gaa.

Fixes: #819

I've filed a question against internal the team that manages
test accounts to ask what the recommended way to refresh these tokens are,
but have not yet gotten a response. Manually refresh the token
to unblock CI.

* feat: add new v3.0.0 API skeleton (#745)

* feat: improve rows filters (#751)

* feat: read rows query model class (#752)

* feat: implement row and cell model classes (#753)

* feat: add pooled grpc transport (#748)

* feat: implement read_rows (#762)

* feat: implement mutate rows (#769)

* feat: literal value filter (#767)

* feat: row_exists and read_row (#778)

* feat: read_modify_write and check_and_mutate_row (#780)

* feat: sharded read rows (#766)

* feat: ping and warm with metadata (#810)

* feat: mutate rows batching (#770)

* chore: restructure module paths (#816)

* feat: improve timeout structure (#819)

* fix: api errors apply to all bulk mutations

* chore: reduce public api surface (#820)

* feat: improve error group tracebacks on < py11 (#825)

* feat: optimize read_rows (#852)

* chore: add user agent suffix (#842)

* feat: optimize retries (#854)

* feat: add test proxy (#836)

* chore(tests): add conformance tests to CI for v3 (#870)

* chore(tests): turn off fast fail for conformance tets (#882)

* feat: add TABLE_DEFAULTS enum for table method arguments (#880)

* fix: pass None for retry in gapic calls (#881)

* feat: replace internal dictionaries with protos in gapic calls (#875)

* chore: optimize gapic calls (#863)

* feat: expose retryable error codes to users (#879)

* chore: update api_core submodule (#897)

* chore: merge main into experimental_v3 (#900)

* chore: pin conformance tests to v0.0.2 (#903)

* fix: bulk mutation eventual success (#909)

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

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

…mplates/python_library/.kokoro (#820)

Source-Link: googleapis/synthtool@30bd01b
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:9bc5fa3b62b091f60614c08a7fb4fd1d3e1678e326f34dd66ce1eefb5dc3267b

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Co-authored-by: Anthonios Partheniou <partheniou@google.com>