[launch-lambda-stack-for-ggp] should not build a lambda with GG Core Binaries

[ruggero-balteri]

Currently the CF stack generated bylaunch-lambda-stack-for-ggp.sh fails.

This is because the GGP binary is bigger than 250MB which is the Lambda size limit.

To reduce the size of the JAR file I suggest to remove the GG Core binaries, which are not needed inside a Lambda.
Namely, the bash script should point to separate gradlew.build that

• does not have these downloads
• does not execute SoftwareDownloadTest

[komushi]

I need to solve the 2 issues @ruggero-balteri mentioned so I created a PR myself.
#935