Merge pull request #377 from romanblanco/bz1692736

Corrected condition testing emptiness of dialog field

(cherry picked from commit ba48151)

https://bugzilla.redhat.com/show_bug.cgi?id=1702063

src/dialog-user/services/dialogData.ts

@@ -161,7 +161,7 @@ export default class DialogDataService {
     }
     // Run check if someone has specified a regex.  Make sure if its required it is not blank
     if (field.validator_rule && validation.isValid === true) {
-      if (angular.isDefined(fieldValue) && fieldValue !== '') {
+      if (angular.isDefined(fieldValue) && !_.isEmpty(fieldValue)) {
         // This use case ensures that an optional field doesnt check a regex if field is blank
         const regexPattern = field.validator_rule.replace(/\\A/i, '^').replace(/\\Z/i,'$');
         const regex = new RegExp(regexPattern);