exclude go.mod and go.sum from license checks

FAB-15732

Change-Id: Ic6ea6defa9bfc1b2e630258cd95fdbcbafcefbae
Signed-off-by: Matthew Sykes <sykesmat@us.ibm.com>

Author: sykesm

scripts/functions.sh

@@ -12,6 +12,8 @@ function filterExcludedAndGeneratedFiles {
         '(^|/)ci\.properties$'
         '(^|/)\.git/'
         '\.gen\.go$'
+        '(^|/)go.mod$'
+        '(^|/)go.sum$'
         '(^|/)Gopkg\.lock$'
         '\.key$'
         '(^|/)LICENSE$'