Steps for nightly update generation (3.6 branch, project branches, and later):
* nightly builders builder generate complete MAR using Makefile
* nightly builder downloads the previous complete MAR from the latest dir on the staging server
* nightly builders generate builder generates partial MAR containing the differences between the two complete MARS using Makefile
* nightly builder generates snippets for both the complete and partial updates
* nightly builder uploads snippets directly to the AUS2 server