fix multiline regex (elmundio87#14)

Author: eredi93

terraform_validate/terraform_validate.py

@@ -406,7 +406,10 @@ def get_regex_matches(self, regex, variable):
             regex = "^" + regex
 
         p = re.compile(regex)
-        return p.match(str(variable))
+        variable = str(variable)
+        if '\n' in variable:
+            return p.match(variable, re.DOTALL)
+        return p.match(variable)
 
     def get_terraform_variable_name(self, s):
         return self.get_regex_matches('\${var.(.*)}', s).group(1)