UI: adds search filter in discovered hosts modal dialog.
UI: adds search filter in discovered hosts modal dialog.

Change-Id: I69ebba3724fe29906da7e32ee13520164ae3b7a0
Signed-off-by: Karnan <7467d07d4104a7e5d4e9fca09701c51722bda3ca@redhat.com>

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