cannot create root stem with new validation

# edu.internet2.middleware.grouper.exception.GrouperException: unable to initialize registry: veto.stem.attribute.name.regex.extension: The folder ID can only contain letters, numbers, underscore, or dash

# 	at edu.internet2.middleware.grouper.registry.RegistryInstall.install(RegistryInstall.java:122)

# 	at edu.internet2.middleware.grouper.ddl.GrouperDdlEngine.registryInstall(GrouperDdlEngine.java:1058)

# 	at edu.internet2.middleware.grouper.ddl.GrouperDdlEngine.initRegistryAndClearCache(GrouperDdlEngine.java:1014)

# 	at edu.internet2.middleware.grouper.ddl.GrouperDdlEngine.runDdl(GrouperDdlEngine.java:880)

# 	at edu.internet2.middleware.grouper.registry.RegistryInitializeSchema.main(RegistryInitializeSchema.java:213)

# 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

# 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

# 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

# 	at java.lang.reflect.Method.invoke(Method.java:498)

# 	at edu.internet2.middleware.grouper.app.gsh.GrouperShell.handleSpecialCase(GrouperShell.java:232)

# 	at edu.internet2.middleware.grouper.app.gsh.GrouperShell.main(GrouperShell.java:165)

# 	at edu.internet2.middleware.grouper.app.gsh.GrouperShellWrapper.main(GrouperShellWrapper.java:31)

# Caused by: edu.internet2.middleware.grouper.hooks.logic.HookVeto: veto.stem.attribute.name.regex.extension: The folder ID can only contain letters, numbers, underscore, or dash

# 	at edu.internet2.middleware.grouper.hooks.examples.StemAttributeNameValidationHook.stemPreChangeAttribute(StemAttributeNameValidationHook.java:215)

# 	at edu.internet2.middleware.grouper.hooks.examples.StemAttributeNameValidationHook.stemPreChangeAttribute(StemAttributeNameValidationHook.java:177)

# 	at edu.internet2.middleware.grouper.hooks.examples.StemAttributeNameValidationHook.stemPreInsert(StemAttributeNameValidationHook.java:166)

# 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

# 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

# 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

# 	at java.lang.reflect.Method.invoke(Method.java:498)

# 	at edu.internet2.middleware.grouper.util.GrouperUtil.invokeMethod(GrouperUtil.java:5019)

# 	at edu.internet2.middleware.grouper.hooks.logic.GrouperHooksUtils.executeHook(GrouperHooksUtils.java:499)

# 	at edu.internet2.middleware.grouper.hooks.logic.GrouperHooksUtils.callHooksIfRegistered(GrouperHooksUtils.java:299)

# 	at edu.internet2.middleware.grouper.hooks.logic.GrouperHooksUtils.callHooksIfRegistered(GrouperHooksUtils.java:238)

# 	at edu.internet2.middleware.grouper.hooks.logic.GrouperHooksUtils.callHooksIfRegistered(GrouperHooksUtils.java:164)

# 	at edu.internet2.middleware.grouper.Stem.onPreSave(Stem.java:3704)

# 	at edu.internet2.middleware.grouper.hibernate.ByObject.save(ByObject.java:209)

# 	at edu.internet2.middleware.grouper.hibernate.ByObjectStatic$7.callback(ByObjectStatic.java:494)

# 	at edu.internet2.middleware.grouper.hibernate.HibernateSession.callbackHibernateSession(HibernateSession.java:703)

# 	at edu.internet2.middleware.grouper.hibernate.ByObjectStatic.save(ByObjectStatic.java:481)

# 	at edu.internet2.middleware.grouper.internal.dao.hib3.Hib3StemDAO.createRootStem(Hib3StemDAO.java:251)