KNOX-3331: Add Maven option to skip Angular UI modules

[smolnar82]

KNOX-3331 - Add Maven option to skip Angular UI modules

What changes were proposed in this pull request?

This PR adds a Maven build option to skip Angular-based UI modules during the reactor build.

By default, the build behavior remains unchanged. When -DskipUi is specified, all Angular-based UI modules are excluded from the build reactor.

Example:

mvn clean install -DskipUi

Motivation

Several Angular UI modules contribute significantly to the overall build time even for backend-only changes.

From a recent full build:

gateway-admin-ui ................. ~26s
knox-homepage-ui ................. ~35s
knox-token-management-ui ......... ~34s
knox-token-generation-ui ......... ~22s
knox-webshell-ui ................. ~21s

Total build time:
~3m47s

How was this patch tested?

Built the project with the new flag:

[INFO] Reactor Summary for gateway 3.0.0-SNAPSHOT:
[INFO] 
[INFO] build-tools ........................................ SUCCESS [  0.515 s]
[INFO] gateway ............................................ SUCCESS [  3.281 s]
[INFO] gateway-test-utils ................................. SUCCESS [  0.671 s]
...
[INFO] gateway-shell-release .............................. SUCCESS [  3.468 s]
[INFO] gateway-docker ..................................... SUCCESS [  1.114 s]
[INFO] gateway-release-common ............................. SUCCESS [  0.078 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  01:18 min
[INFO] Finished at: 2026-05-27T18:47:14+02:00
[INFO] ------------------------------------------------------------------------

We are now down to ~1:20 mins (almost 1/3 of the original build time). This is a huge improvement and will increase our efficiency when running Docker-based tests or other manual testing locally where UIs are not involved.

Integration Tests

After I built the project I ran Docker-based integration tests:

tests-1  | ============================= test session starts ==============================
tests-1  | platform linux -- Python 3.9.25, pytest-8.3.4, pluggy-1.6.0
tests-1  | rootdir: /tests
tests-1  | collected 21 items
tests-1  | 
tests-1  | test_health.py .....                                                     [ 23%]
tests-1  | test_knox_auth_service_and_LDAP.py ..                                    [ 33%]
tests-1  | test_knox_configs.py .                                                   [ 38%]
tests-1  | test_knoxauth_preauth_and_paths.py ......                                [ 66%]
tests-1  | test_remote_auth.py ...                                                  [ 80%]
tests-1  | test_remoteauth_extauthz_additional_path.py ....                         [100%]
tests-1  | 
tests-1  | =============================== warnings summary ===============================
...
tests-1  | 
tests-1  | -- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
tests-1  | ----------------- generated xml file: /tests/test-results.xml ------------------
tests-1  | ======================= 21 passed, 21 warnings in 0.80s ========================

UI changes

N/A

[smolnar82]

cc. @handavid

[github-actions]

Test Results

21 tests   21 ✅  2s ⏱️
 1 suites   0 💤
 1 files     0 ❌

Results for commit 9a173ef.

♻️ This comment has been updated with latest results.