Follow up to https://github.com/patternfly/patternfly/pull/8207 Add isGlass modifier which applies the 'pf-m-glass' modifier --- **Jira Issue:** [PF-3726](https://redhat.atlassian.net/browse/PF-3726)
Follow up to patternfly/patternfly#8207
Add isGlass modifier which applies the 'pf-m-glass' modifier
Jira Issue: PF-3726