[GSS](7.3.0) Change the protocol when creating the Advanced option in EAP

While installing through Advanced option, the default protocol comes wrong.

Comparison below:

Protocol(remote): While installing through Advanced option and manually selecting custom ports for domain mode
~~~
<domain-controller>
<remote security-realm="ManagementRealm">
<discovery-options>
<static-discovery name="primary" protocol="${jboss.domain.master.protocol:remote}" host="${jboss.domain.master.address}" port="${jboss.domain.master.port:9990}"/>
</discovery-options>
</remote>
~~~

Protocol(remote+http):While installing through normal/default option:
~~~
<remote security-realm="ManagementRealm">
<discovery-options>
<static-discovery name="primary" protocol="${jboss.domain.master.protocol:remote+http}" host="${jboss.domain.master.address}" port="${jboss.domain.master.port:9990}"/>
</discovery-options>
</remote>
~~~