Add retry_timeout support for the sunburnt connection
Add retry_timeout support for the sunburnt connection

If the solr server is subject to a non-transparent restart, this
teaches sunburnt to automatically retry connections after a timeout.

pixbuffer/sunburnt-spatial,qmssof/sunburnt,rlskoeser/sunburnt,rlskoeser/sunburnt,pixbuffer/sunburnt-spatial,anmar/sunburnt,anmar/sunburnt,tow/sunburnt