CFE-3008 Message about invalid class characters from module protocol moved to VERBOSE

In CFE-2887 the module protocol began automatically canonifying classes
that were defined in order to align with the behaviour of policy. This
change moves a warning about the class containing invalid characters to
VERBOSE as to align with policy.

Author: nickanderson

libpromises/evalfunction.c

@@ -8097,7 +8097,7 @@ static bool CheckID(const char *id)
     {
         if (!CheckIDChar(*sp))
         {
-            Log(LOG_LEVEL_WARNING,
+            Log(LOG_LEVEL_VERBOSE,
                   "Module protocol contained an illegal character '%c' in class/variable identifier '%s'.", *sp,
                   id);
         }