Use config path specified in solr_wrapper config instead of assuming solr/conf in rake task

[cjcolvar]

The hydra:test_server and hydra:server rake tasks only look for the solr configuration in solr/conf instead of using the path specified in the solr_wrapper config file which it also reads. This is confusing since the rake tasks uses other configuration options from the solr_wrapper config files but disregards the dir option.

active_fedora/lib/active_fedora/rake_support.rb

Line 19 in 599fd49

solr_config_path = File.join('solr', 'conf')