Update CI script for showcase server to run Gradle build
Update CI script for showcase server to run Gradle build

st15/spring-android-samples,b-cuts/spring-android-samples,liuciuse/spring-android-samples,admin-zhx/spring-android-samples,TrienDo/spring-android-samples,ricardolonga/spring-android-samples,pkdevbox/spring-android-samples,msdgwzhy6/spring-android-samples,swahid/spring-android-samples,liuciuse/spring-android-samples,felipeweb/spring-android-samples,msdgwzhy6/spring-android-samples,admin-zhx/spring-android-samples,bonifacechacha/spring-android-samples,ricardolonga/spring-android-samples,felipeweb/spring-android-samples,b-cuts/spring-android-samples,admin-zhx/spring-android-samples,bonifacechacha/spring-android-samples,st15/spring-android-samples,quang-nh/Spring-for-android,liuciuse/spring-android-samples,quang-nh/Spring-for-android,spring-projects/spring-android-samples,pkdevbox/spring-android-samples,spring-projects/spring-android-samples,swahid/spring-android-samples,b-cuts/spring-android-samples,st15/spring-android-samples,felipeweb/spring-android-samples,quang-nh/Spring-for-android,fjg1989/spring-android-samples,spring-projects/spring-android-samples,TrienDo/spring-android-samples,pkdevbox/spring-android-samples,swahid/spring-android-samples,fjg1989/spring-android-samples,ricardolonga/spring-android-samples,msdgwzhy6/spring-android-samples,TrienDo/spring-android-samples,fjg1989/spring-android-samples