Closes #162 - Fix some SonarCloud issues in Backend #128

Job	Run time
Compile all maven modules	2m 36s
Compile kadai-web	1m 42s
Test kadai-web	58s
Test E2E	1m 26s
Test kadai-common on H2	34s
Test kadai-common-security on H2	22s
Test kadai-common-data on H2	30s
Test kadai-common-logging on H2	41s
Test kadai-common-test on H2	30s
Test kadai-core on H2	1m 36s
Test kadai-core-test on H2	1m 17s
Test kadai-cdi on H2	45s
Test kadai-cdi-example on H2	46s
Test kadai-test-api on H2	42s
Test kadai-spring on H2	29s
Test kadai-spring-example on H2	51s
Test kadai-spi-routing-dmn-router on H2	35s
Test kadai-routing-rest on H2	55s
Test kadai-rest-spring on H2	2m 0s
Test kadai-rest-spring-test-lib on H2	40s
Test kadai-rest-spring-example-common on H2	43s
Test kadai-loghistory-provider on H2	27s
Test kadai-simplehistory-provider on H2	43s
Test kadai-simplehistory-rest-spring on H2	41s
Test kadai-core on POSTGRES	1m 48s
Test kadai-core on DB2	2m 54s
Test kadai-core-test on POSTGRES	1m 33s
Test kadai-core-test on DB2	2m 19s
Test kadai-test-api on POSTGRES	52s
Test kadai-test-api on DB2	1m 12s
Test kadai-simplehistory-provider on DB2	1m 43s
Test kadai-simplehistory-provider on POSTGRES	1m 1s
Test kadai-rest-spring-example-boot on DB2	24s
Test kadai-rest-spring-example-wildfly on POSTGRES	2m 22s
Upload SonarQube analysis to sonarcloud	10m 51s
Deploy demo app to Microsoft Azure	0s
Release artifacts to OSS Sonatype	0s
	49m 28s

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