CLI write attribute dialog for string value should enclose value in generated command to double quotes

Wildfly issue for https://bugzilla.redhat.com/show_bug.cgi?id=988283

String value entered in write attribute dialog is written to command without double quotes, which is wrong in many cases

Eg. when user enteres in dialog value ${jboss.bind.address:127.0.0.1}
following command is generated:

/subsystem=webservices/:write-attribute(name=wsdl-host,value=${jboss.bind.address:127.0.0.1})

Correctly should be generated command 
/subsystem=webservices/:write-attribute(name=wsdl-host,value="${jboss.bind.address:127.0.0.1}")

1. start AS
  ./bin/standalone.sh
2. start CLI GUI 
  ./bin/jboss-cli.sh --gui &
3. click on node subsystem=webservices of /
4. right click on wsdl-host and select write-attribute
5. enter value ${jboss.bind.address:127.0.0.1} and click OK
6. submit generated command
7. reload node
  click on node subsystem=webservices of / (close node)
  click on node subsystem=webservices of / (open node)

Result is wsdl-host=$ instead of wsdl-host=${jboss.bind.address:127.0.0.1}


Workaround: in dialog box enclose the value in double quotes