feat(sonar): respect existing SONAR_SCANNER_OPTS definition (#5230) #956

Job	Run time
Start	10s
Build Piper	1m 31s
Build integration tests	18s
Run integration tests ("(TestCNBIntegrationBindings\|TestCNBIntegrationWrongBuilderProject\|TestCNB...	1m 33s
Run integration tests ("TestCNBIntegrationPreserveFiles\b")	1m 41s
Run integration tests ("TestCNBIntegrationNPMProject")	2m 7s
Run integration tests ("TestCNBIntegrationMultiImage")	2m 52s
Run integration tests ("TestCNBIntegrationNPMCustomBuildpacksBuildpacklessProject")	1m 31s
Run integration tests ("TestCNBIntegrationNPMCustomBuildpacksFullProject")	1m 26s
Run integration tests ("TestCNBIntegrationProjectDescriptor")	1m 27s
Run integration tests ("TestCNBIntegrationPrePostBuildpacks")	1m 24s
Run integration tests ("TestGolangIntegration")	1m 51s
Run integration tests ("TestGradleIntegration")	1m 25s
Run integration tests ("TestMavenIntegration")	1m 48s
Run integration tests ("TestMTAIntegration")	1m 56s
Run integration tests ("TestTmsUploadIntegration")	1m 11s
Run integration tests ("TestTmsExportIntegration")	52s
Run integration tests ("Test(Gauge\|GCS\|GitHub\|GitOps\|Influx\|NPM\|Piper\|Python\|Sonar\|Vault\|Karma)In...	1m 28s
Finish	4s
	26m 35s

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