ttpe windows build : ClassNotFoundException: org.apache.commons.logging.LogFactory

[ngaullier]

TTPE windows build throws an exception at run time
How to reproduce:
java -jar target\ttt-ttpe-all-7.2-SNAPSHOT.jar --config XXX\ttt-ttpe\target\test-classes\com\skynav\ttpe\imsc1\test.config.xml --font-directory XXX\ttt-ttpe\src\test\fonts file:/XXX/ttt-ttpe/target/test-classes/com/skynav/ttpe/ttml2/ttml2-placement-and-alignment-default.xml
Results:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
(...)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory