fixed background image issue in login page
fixed background image issue in login page

The background image on the login page was
not shown properly, some parts were hidden.
This is now fixed.

Signed-off-by: Kanagaraj M <a744b691cd98174fb19a473a8cf78b810491e452@redhat.com>

skyrings/kitoon,Tendrl/dashboard,kmkanagaraj/usm-client-2,kmkanagaraj/usm-client-2,Tendrl/dashboard,skyrings/kitoon,cloudbehl/tendrl_frontend,cloudbehl/tendrl_frontend,skyrings/kitoon,kmkanagaraj/usm-client-2