Add integTest as test source directory
Add integTest as test source directory

This allows IDEA to recognize src/integTest/groovy and src/integTest/resources
as test source directories.

Signed-off-by: Ealden Esto E. Escanan <ff27627daef6b3172da4425363457b1137a9e29e@gmail.com>

jvoegele/gradle-android-plugin,t3t5u/gradle-android-plugin,jvoegele/gradle-android-plugin,t3t5u/gradle-android-plugin