LDAP Version needs to be set to allow logins

[dc53000]

I had to make these changes to allow LDAP authentication to work. Prior, I was getting this error in the debug log:

[2015-09-04 14:05:24] production.DEBUG: Authenticating user against LDAP. [] []
[2015-09-04 14:05:24] production.ERROR: ldap_bind(): Unable to bind to server: Protocol error [] []

Sorry for not having a patch or making a pull request, I am unfortunately git-stupid.

The fix is in app/controllers/AuthControllers.php
Add at line 35:

$ldapversion = Config::get('ldap.version');

Add at line 43:

ldap_set_option($connection, LDAP_OPT_PROTOCOL_VERSION,$ldapversion);

This was to auth against openldap server 2.4.28-1.1ubuntu4.3.

Client libraries:

ii  libldap-2.4-2:amd64                 2.4.31-1+nmu2ubuntu8.1           amd64        OpenLDAP libraries
ii  php5-ldap                           5.5.9+dfsg-1ubuntu4.11           amd64        LDAP module for php5

[snipe]

Huh. I could have sworn I had done that already. :-/

Anyway, thanks!