Use cbsasl instead of isasl

Change-Id: I441cee610fc95964cdee8d4d3fd8f4d382772c74
MB-7643: auto-tune number of worker threads

If you have more than 4 cores let's use 75% of them for
frontend threads

Change-Id: I76b3693ff5dfa74532e7d4cabb90a853e6b78c60
Start adding UPR stuff

Change-Id: I947f2a82eab6861a12c4a8d25b3783b0e6bd8b10