You need to uncomment the users& password in the $soa-suite/jboss-as/server/$config (like default)conf/props/soa-users.properties.
Once you find the soa-users.properties, you should know it. ;-)
sorry, should be:
$soa-suite/jboss-as/server/$config (like default)/conf/props/soa-users.properties.
wait a sec, you deploy the esb to jboss application server, then you should find the username & password under $jboss-as/server/$config (like default)/conf/props/jmx-users.properties.
I thought you were using JBoss SOA Platform, when you were saying soa suite.