Update connection URL for SQL Server in spec_helper.rb
Update connection URL for SQL Server in spec_helper.rb

Signed-off-by: Alex Coles <60c6d277a8bd81de7fdde19201bf9c58a3df08f4@alexcolesportfolio.com>

alloy/dm-core,ar-dm/ardm-core,tpitale/dm-core,tillsc/dm-core,datamapper/dm-core,engineyard/dm-core