20 new commits pushed to

<https://github.com/flyteorg/flyte/tree/master|master>

by eapolinario

<https://github.com/flyteorg/flyte/commit/016dceef1b8e7ff3fcfd0b49f983267298814532|016dceef>

- #minor - bump to 1.5.x to avoid 1.4.0 and 1.4.2 issues (#399)

<https://github.com/flyteorg/flyte/commit/643bf518293074b91b59ad623f0687ce38f0f617|643bf518>

- Refactor kf-operator plugins configs and support setting different specs for different replica groups (#386)

<https://github.com/flyteorg/flyte/commit/4cbcb657921197783e48aae48531b8360b17a323|4cbcb657>

- add user_identifier (#388)

<https://github.com/flyteorg/flyte/commit/f68015baf48344ae2fd7f5e92fbd4411710039fd|f68015ba>

- Add envs to execution spec (#400)

<https://github.com/flyteorg/flyte/commit/c8a8597a40902ad1f2bfed473dc668b1642072f8|c8a8597a>

- Support union and none type in flyteidl (#401)

<https://github.com/flyteorg/flyte/commit/c5837614850881e3016e38b83f2a4420ce531e07|c5837614>

- Rename user_identity to execution_identity (#402)

<https://github.com/flyteorg/flyte/commit/2692dea56d619e1355becd0ddb26d325bacc676b|2692dea5>

- Single literal in GetDataResponse (#404)

<https://github.com/flyteorg/flyte/commit/5f876026f6abe67d31546d4d2d32d70ce41cfcde|5f876026>

- Add namespace to execution system metadata (#406)

<https://github.com/flyteorg/flyte/commit/3e10bb8fe4a327f4139b0407c75afebf6292f076|3e10bb8f>

- Add oauth2 http proxy client (#405)

<https://github.com/flyteorg/flyte/commit/1e785cc3f6908293847c9bd548e46f0ebe15fdb2|1e785cc3>

- Rename externalPluginService to AgentService (#410)

<https://github.com/flyteorg/flyte/commit/66a9dacbdb29021c2cf07cd3a80ad1345f54e739|66a9dacb>

- Add external_plugin_service proto back to the idl (#413)

<https://github.com/flyteorg/flyte/commit/42315a6ee064a294356a2fdc61f0f228e068b627|42315a6e>

- Add prefix to data upload (#416)

<https://github.com/flyteorg/flyte/commit/5c5975639a70fc239a2f68669c2de124fd624db1|5c597563>

- Add ArrayNode proto message (#390)

<https://github.com/flyteorg/flyte/commit/c8b41d5fe2c2037f660ea96c3c79e206434878f5|c8b41d5f>

- Pass task execution metadata from agent (#422)

<https://github.com/flyteorg/flyte/commit/3e852b081667b07c2184ca2a93e71ed76c38bd2e|3e852b08>

- Add tags to execution spec (#414)

<https://github.com/flyteorg/flyte/commit/fb13157ce5aabd5209d115e4706eea92c382ebf0|fb13157c>

- Correct comment for array job max parallelism (#431)

<https://github.com/flyteorg/flyte/commit/0b4c7de31bf0e5e675c7492253c63857d1e71038|0b4c7de3>

- Add the scalar to the operand (#427)

<https://github.com/flyteorg/flyte/commit/7565b63808f761e0de7d7afa2b7dfefca79e4baa|7565b638>

- Updating boilerplate to lock golangci-lint version (#435)

<https://github.com/flyteorg/flyte/commit/55bb4af7cbe9df9118293fc243dfabfcd23f57ce|55bb4af7>

- Merge remote-tracking branch 'flyteidl/prepare-for-monorepo' into monorepo--import-flyteidl

<https://github.com/flyteorg/flyte/commit/8970d4c2634e3880e6c1ee47ff47607a686b6027|8970d4c2>

- Merge pull request #4017 from flyteorg/monorepo--import-flyteidl flyteorg/flyte