DP-95 Added build option to run AWS integration tests
DP-95 Added build option to run AWS integration tests

Cheddar's root build script has been updated to optionally run integration tests, like this:
gradle -DrunIntegrationTests checkAndUploadAll
Integration tests will run after unit tests but before uploading artifacts.

Signed-off-by: Steffan Westcott <f3c2708f096cd7bd1163d9748b17f6e154c59391@clicktravel.com>

ClickTravel/Cheddar,clicktravel-basharat/Cheddar,travel-cloud/Cheddar,click-alexvladut/Cheddar,clicktravel-chrishern/Cheddar,clicktravel-jag/Cheddar,clicktravel-james/Cheddar,clicktravel-craig/Cheddar,clicktravel-steffan/Cheddar,clicktravel-gary/Cheddar,clicktravel-tajinder/Cheddar,ClickTravel-VincentCleaver/Cheddar,clicktravel-andrew/Cheddar,clicktravel-martindimitrov/Cheddar,clicktravel-robin/Cheddar,clicktravel-chris/Cheddar