[Internal][Executor] Extract some common constants to promptflow._constants

[PeiwenGaoMS]

Description

Extract some constants used by both executor server and sdk/cli to promptflow._constants.

All Promptflow Contribution checklist:

• The pull request does not introduce [breaking changes].
• CHANGELOG is updated for new features, bug fixes or other significant changes.
• I have read the contribution guidelines.
• Create an issue and link to the pull request to get dedicated review from promptflow team. Learn more: suggested workflow.

General Guidelines and Best Practices

• Title of the pull request is clear and informative.
• There are a small number of commits, each of which have an informative message. This means that previously merged commits do not appear in the history of the PR. For more information on cleaning up the commits in your PR, see this page.

Testing Guidelines

• Pull request includes test coverage for the included changes.

[github-actions]

SDK CLI Global Config Test Result devs/peiwen/extract_common_constants

2 tests   2 ✅  49s ⏱️
1 suites  0 💤
1 files    0 ❌

Results for commit 942e4b2.

♻️ This comment has been updated with latest results.

[github-actions]

promptflow-tracing unit test result devs/peiwen/extract_common_constants

 4 files   4 suites   21s ⏱️
 4 tests  4 ✅ 0 💤 0 ❌
16 runs  16 ✅ 0 💤 0 ❌

Results for commit 942e4b2.

♻️ This comment has been updated with latest results.

[github-actions]

promptflow-tracing e2e test result devs/peiwen/extract_common_constants

 4 files   4 suites   1m 44s ⏱️
 8 tests  8 ✅ 0 💤 0 ❌
32 runs  32 ✅ 0 💤 0 ❌

Results for commit 942e4b2.

♻️ This comment has been updated with latest results.

[github-actions]

promptflow SDK CLI Azure E2E Test Result devs/peiwen/extract_common_constants

  4 files    4 suites   3m 46s ⏱️
168 tests 149 ✅ 19 💤 0 ❌
672 runs  596 ✅ 76 💤 0 ❌

Results for commit 942e4b2.

♻️ This comment has been updated with latest results.

[github-actions]

Executor Unit Test Result devs/peiwen/extract_common_constants

754 tests   754 ✅  3m 51s ⏱️
  1 suites    0 💤
  1 files      0 ❌

Results for commit 942e4b2.

♻️ This comment has been updated with latest results.

[github-actions]

Executor E2E Test Result devs/peiwen/extract_common_constants

210 tests   208 ✅  7m 43s ⏱️
  1 suites    2 💤
  1 files      0 ❌

Results for commit 942e4b2.

♻️ This comment has been updated with latest results.

[github-actions]

SDK CLI Test Result devs/peiwen/extract_common_constants

   12 files     12 suites   40m 26s ⏱️
  451 tests   433 ✅ 18 💤 0 ❌
1 804 runs  1 732 ✅ 72 💤 0 ❌

Results for commit 942e4b2.

♻️ This comment has been updated with latest results.