Description of problem:
When mount point and LV names are not specified gluster deployment throws an error "Brick Directory cannot be empty" and "Brick name cannot be empty". The text messages should be changed to "Mount point cannot be empty" and "LV name cannot be empty.

Version-Release number of selected component (if applicable):
cockpit-ovirt-dashboard-0.10.7-0.0.13.el7.centos.noarch

How reproducible:
Always

Steps to Reproduce:
1. start deploying gluster using cockpit-ovirt-dashboard
2. Do not specify LV Name and mount point.
3.

Actual results:
When LV Name and Mount Point are not specified Gluster Deployment wizard throws an error ""Brick Directory cannot be empty" and "Brick name cannot be empty"

Expected results:
change the text messages to "Mount point cannot be empty" and "LV name cannot be empty" as the fields which are empty are mount point and LV name.

Additional info: