If your LDAP server is being spammed and then locking out your SVN directory you can turn off the auth by changing the file:
nano /etc/openproject-ce/addons/apache2/includes/vhost/svn_dav.conf
Just remember this will make it insecure (I have found this useful for big uploads or first commits) as in it will not require a password to access the SVN
change to:
ProxyPass /svn !
<Location /svn>
ErrorDocument 401 default
ErrorDocument 403 default
ErrorDocument 404 default
DAV svn
SVNParentPath "/var/db/openproject-ce/svn"
DirectorySlash Off
OpenProjectUrl 'http://127.0.0.1:6000'
OpenProjectApiKey 'oSkBTecrHKAGc3sHSNh8leGMnYISK6BL'
</Location>
The original looks like this with the _Values being changed at install time:
ProxyPass /svn !
<Location /svn>
ErrorDocument 401 default
ErrorDocument 403 default
ErrorDocument 404 default
DAV svn
SVNParentPath "_SVN_REPOSITORIES_"
DirectorySlash Off
AuthType Basic
AuthName "Secured Area"
Require valid-user
PerlAccessHandler Apache::Authn::OpenProject::access_handler
PerlAuthenHandler Apache::Authn::OpenProject::authen_handler
OpenProjectUrl '_APP_URI_'
OpenProjectApiKey '_APP_API_KEY_'
</Location>