cli AS7-2665 tab-completion of types described with value-type
[AS7-6120] Expand support for System Property substitution

* fix core-service vault's vault-options validator to allow expression
Updated the Readme.txt of the jboss-client shipped in JBOSS_HOME/bin/client

The Readme.txt in JBOSS_HOME/bin/client was missing the mention of org.jboss:jboss-ejb-client library. Updated the file to include it.