Fix acceptance tests

Author: jordanbreen28

spec/spec_helper_acceptance_local.rb

@@ -49,9 +49,10 @@ def node_vars?
 
 def sql_version?
   vars = node_vars?
-
-  if vars['sqlversion']
-    return vars['sqlversion'].match(%r{sqlserver_(.*)})[1]
+  unless vars.nil?
+    if vars['sqlversion']
+      return vars['sqlversion'].match(%r{sqlserver_(.*)})[1]
+    end
   end
   # Return's a default version if none was given
   '2016'