test(orchestrator): add unit tests for v2 endpoints

[gciavarrini]

Add unit tests for v2 endpoints defined in openapi.yaml spec.

@janus-idp/backstage-plugin-orchestrator-backend:test: ----------------------------|---------|----------|---------|---------|-----------------------------------------
@janus-idp/backstage-plugin-orchestrator-backend:test: File                        | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                       
@janus-idp/backstage-plugin-orchestrator-backend:test: ----------------------------|---------|----------|---------|---------|-----------------------------------------
@janus-idp/backstage-plugin-orchestrator-backend:test:  src/service/api            |   88.48 |    67.79 |   91.89 |   88.12 |                                         
@janus-idp/backstage-plugin-orchestrator-backend:test:   test-utils.ts             |   97.56 |    95.65 |     100 |   97.29 | 159                                     
@janus-idp/backstage-plugin-orchestrator-backend:test:   v1.ts                     |   83.33 |    47.61 |   83.33 |   83.33 | 29,48,94,99,111,124,151,154,164,170,197 
@janus-idp/backstage-plugin-orchestrator-backend:test:   v2.ts                     |   87.93 |    53.33 |   93.33 |   87.71 | 58,103,122,128,134,148,206              
@janus-idp/backstage-plugin-orchestrator-backend:test:  src/service/api/mapping    |   82.45 |       60 |     100 |   82.14 |                                         
@janus-idp/backstage-plugin-orchestrator-backend:test:   V2Mappings.ts             |   82.45 |       60 |     100 |   82.14 | 74,94,98,110-120,137               

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
1.0% Duplication on New Code

See analysis details on SonarCloud

[openshift-ci]

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• plugins/orchestrator/OWNERS [caponetto]
• plugins/orchestrator-backend/OWNERS [caponetto]
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