Closes #436 - fix mistakenly required ldap-permission-props to be optional #1772

Job	Run time
Compile all maven modules	2m 22s
Compile kadai-web	1m 53s
Test kadai-web	1m 21s
Test E2E	1m 45s
Test kadai-common on H2	46s
Test kadai-common-security on H2	25s
Test kadai-common-data on H2	27s
Test kadai-common-logging on H2	34s
Test kadai-common-test on H2	46s
Test kadai-core on H2	1m 25s
Test kadai-core-test on H2	1m 25s
Test kadai-cdi on H2	44s
Test kadai-cdi-example on H2	1m 0s
Test kadai-test-api on H2	41s
Test kadai-spring on H2	42s
Test kadai-spring-example on H2	47s
Test kadai-spi-routing-dmn-router on H2	43s
Test kadai-routing-rest on H2	50s
Test kadai-rest-spring on H2	1m 52s
Test kadai-rest-spring-test-lib on H2	23s
Test kadai-rest-spring-example-common on H2	47s
Test kadai-loghistory-provider on H2	44s
Test kadai-simplehistory-provider on H2	59s
Test kadai-simplehistory-rest-spring on H2	38s
Test kadai-core on POSTGRES	1m 31s
Test kadai-core on DB2	3m 8s
Test kadai-core-test on POSTGRES	1m 46s
Test kadai-core-test on DB2	2m 23s
Test kadai-test-api on POSTGRES	49s
Test kadai-test-api on DB2	1m 23s
Test kadai-simplehistory-provider on DB2	1m 44s
Test kadai-simplehistory-provider on POSTGRES	1m 1s
Test kadai-rest-spring-example-boot on DB2	48s
Test kadai-rest-spring-example-wildfly on POSTGRES	3m 13s
Upload SonarQube analysis to sonarcloud	0s
Deploy demo app to Microsoft Azure	0s
Release artifacts to OSS Sonatype	0s
Update version to next snapshot and push back	0s
	41m 45s

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