Added ENV NO_RESET_BEFORE_SUITE to allow RSpec test suite start without DB reset (for e.g. running single tests where no DB reset is needed).

spec/support/reset_system_before_suite.rb

@@ -1,5 +1,7 @@
 RSpec.configure do |config|
   config.before(:suite) do
+    next if ENV['NO_RESET_BEFORE_SUITE']
+
     Rake::Task['zammad:db:reset'].invoke
   end
 end