we need to return a valid CIDR IP
to get it fenced properly, the previously
returned one was like `10.63.0.5:0/32` which
is not a valid CIDR, removing `:0` to look like
proper IP CIDR.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
(cherry picked from commit eb304a5073)