The idea is to:
run a NOS/Gitty server locally
set the HTTP pool to a low number (i.e. 5)
hammer a Connect API that will access directly Git to fetch the application definition
=> hopefully reproduce the HTTP 503 response
One of the goals is to check that we do not fail to properly release a connection.
We should also try to upgrade Gitty to remove the Lock issue (see Bug 543739 - Overly broad synchronization).