KRACOEUS-7867: Fix errors in RegEx validation expressions

Fix errors in DD files for format validation:

1) validCharactersConstraint parent should be ValidCharactersConstraint and not JavaClassPatterConstraint;

2) Some validation patterns for Award Number had incorrectly specified 3 digits after the dash.
Yes, I did a global scan for RegexValidationPattern. I could follow the example of the dummy time attribute and define an Award Number parent bean.  I'll do that before we merge.