fixed configuration problem when properties file is missing

removed signing tasks
4 jobs for gradle-ci in 1 minute and 45 seconds (queued for 1 second)
latest
Status Name Job ID Coverage
  Build
passed build:jdk8 #1156

00:00:39

passed build:jdk:latest #1157

00:00:51

 
  Test
passed test:jdk8 #1158

00:00:37

passed test:jdkLatest #1159

00:00:51