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 Job ID Name Coverage
  Build
passed #1156
build:jdk8

00:00:39

passed #1157
build:jdk:latest

00:00:51

 
  Test
passed #1158
test:jdk8

00:00:37

passed #1159
test:jdkLatest

00:00:51