[bug] pf-panel styles for raised and bordered

[zeroedin]

Description of the issue

Styles for pf-panel for raise and bordered variants do not seem to be working correctly.

See pf-panel demo and compare to PFv4 panel

https://www.patternfly.org/v4/components/panel/#bordered
https://www.patternfly.org/v4/components/panel/#raised

[bennypowers]

@anujsi Would you like to take this one?

[anujsingla]

Yes, I will take this issue.

[anujsingla]

I have made changes for this issue - #2436
closing this issue.