EE - Increase code coverage in Gateway

[taban03]

Increase API ML code coverage (specifically in GW)

Benefits we would get by migrating to JUnit5 are explained here #479

Gateway has been fully migrated to JUnit5 (org.junit.jupiter.api), the other modules are using the Vintage package (part of the junit5 library) for backward compatibility with Junit4

[codecov]

Codecov Report

Merging #517 into master will decrease coverage by 0.6%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #517      +/-   ##
==========================================
- Coverage   76.84%   76.24%   -0.61%     
==========================================
  Files         305      299       -6     
  Lines        6064     5644     -420     
  Branches      726      674      -52     
==========================================
- Hits         4660     4303     -357     
+ Misses       1216     1160      -56     
+ Partials      188      181       -7

Impacted Files	Coverage Δ
...in/java/org/zowe/apiml/product/web/HttpConfig.java	78.84% <0%> (-2.83%)	⬇️
...ity/common/config/AuthConfigurationProperties.java	94.11% <0%> (-1.54%)	⬇️
...discovery/metadata/MetadataTranslationService.java	97.14% <0%> (-1.04%)	⬇️
...ateway/security/service/AuthenticationService.java	91.42% <0%> (-0.4%)	⬇️
...urity/login/zosmf/ZosmfAuthenticationProvider.java	98.41% <0%> (-0.22%)	⬇️
...iml/security/common/token/TokenAuthentication.java	100% <0%> (ø)	⬆️
...zowe/apiml/gateway/routing/ApimlRoutingConfig.java	0% <0%> (ø)	⬆️
...teway/security/config/ComponentsConfiguration.java	0% <0%> (ø)	⬆️
...owe/apiml/security/common/token/QueryResponse.java	100% <0%> (ø)	⬆️
...gateway/security/config/SecurityConfiguration.java	0% <0%> (ø)	⬆️
... and 8 more

---

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[codecov]

Codecov Report

Merging #517 into master will increase coverage by 36.86%.
The diff coverage is 70%.

@@             Coverage Diff             @@
##           master     #517       +/-   ##
===========================================
+ Coverage    39.1%   75.96%   +36.86%     
===========================================
  Files         299      301        +2     
  Lines        5644     5667       +23     
  Branches      674      676        +2     
===========================================
+ Hits         2207     4305     +2098     
+ Misses       3364     1182     -2182     
- Partials       73      180      +107

Impacted Files	Coverage Δ
.../gateway/ws/WebSocketRoutedSessionFactoryImpl.java	0% <0%> (ø)
...l/gateway/ws/ServletSslContextFactoryProvider.java	0% <0%> (ø)
.../apiml/gateway/ws/WebSocketProxyServerHandler.java	43.37% <50%> (+43.37%)	⬆️
...gateway/controllers/GatewayHomepageController.java	93.93% <90.62%> (+93.93%)	⬆️
...ain/java/org/zowe/apiml/security/HttpsFactory.java	76.72% <0%> (+1.72%)	⬆️
.../zowe/apiml/gateway/ws/WebSocketRoutedSession.java	2.63% <0%> (+2.63%)	⬆️
...in/java/org/zowe/apiml/security/SecurityUtils.java	54.94% <0%> (+4.39%)	⬆️
...java/org/zowe/apiml/product/version/BuildInfo.java	5% <0%> (+5%)	⬆️
... and 102 more

---

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[sonarqubecloud]

SonarCloud Quality Gate failed.

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
0 Code Smells

65.1% Coverage
0.0% Duplication