Description of problem:
Cannot add server to managed domain, because server name input field is disabled.

Version-Release number of selected component (if applicable):
EAP 6.2.0.ER2

Steps to Reproduce:
export IP=aaa.bbb.ccc.ddd // use IP address of your machine
unzip -q jboss-eap-6.2.0.ER2.zip
# start domain controller
./jboss-eap-6.2/bin/domain.sh --host-config=host-master.xml -bmanagement=$IP &
# start slave
./jboss-eap-6.2/bin/domain.sh --host-config=host-slave.xml -Djboss.domain.master.address=$IP &
# add user
./jboss-eap-6.2/bin/add-user.sh -u admin -p asdasd@2
# connect to web console on $IP:9990
# go to hosts, choose your local machine as host and try to add server in Server configuration tab

Actual results:
Server name input field is disabled

Expected results:
Server name input field isn't disabled

Additional info:
I am able to add server via CLI
Working as expected in EAP 6.2.0.ER1