Allow for test_types_buffer_size to be set in server configuration

[Meteor0id@…]

As I added a bunch of MIME types to gzip_types in my server block, nginx -t returned I need to increase test_types_hash_bucket_size.
Appearently I can do this in the config for types_hash_bucket_size, but not for test_types_has_bucket_size. This is currently hardcoded.

Could we add the option to configure this setting throught the config file? It might also be relevant to do the same for other test_ settings. My current configuration doenst seem very unusual to me, so I can image more people encounter this limitation after adding some MIME types.

[Meteor0id@…]

title should be test_types_hash_bucket_size !

old but possibly relevant forum posts:
​http://nginx.2469901.n2.nabble.com/test-types-hash-max-size-td6085723.html

[Maxim Dounin]

Could you please provide the exact error message you see, and exact configuration snippet which causes it? A message about test_types_hash_bucket_size is only expected to appear when you are trying to use a MIME type which is too long, and it is more or less trivial to write (an incorrect) configuration which triggers this message unintentionally, see #203. See also #1446.