Raise MisconfigurationError on restart failure, so we don't attempt to continue
with an authorization we know will fail.
Log at debug level the config files that are about to be written out, so it's
easier to debug restart failures.
Fix https://github.com/letsencrypt/letsencrypt/issues/942:
Error out if adding a conflicting directive.
Remove unnecessarily-inserted access_log and error_log directives. These were
added to make integration testing easier but are no longer needed. Incidentally
this makes the plugin work with some configs where it wouldn't have worked
previously.
Change the semantics of add_server_directives with replace=True so only the
first instance of a given directive is replaced, not all of them. This works
fine with the one place in the code that calls add_server_directives with
replace=True, because all of the involved directives aren't allowed to be
duplicated in a given block.
Make add_http_directives do inserts into the structure itself, since its needs
were significantly different than the more general add_server_directives. This
also allows us to narrow the scope of the `block.insert(0, directive)` hack that
we inserted to work around https://trac.nginx.org/nginx/ticket/810, since it's
only necessary for http blocks.
Add a server_names_hash_bucket_size directive during challenges to fix an nginx
crash on restart (Fixes#922).
Use fullchain instead of chain (Fixes#610).
Implement OCSP stapling (Fixes#937, Fixes#931).
Hide Boulder output in integration tests to make them more readable.
