CLOUDSTACK-7837: [UI] Make the Source CIDR column wide enough to fit the CIDR value without ellipsizing

Signed-off-by: Rajani Karuturi <rajanikaruturi@gmail.com>
Merge branch '4.5'

* 4.5:
  CLOUDSTACK-7837: [UI] Make the Source CIDR column wide enough to fit the CIDR value without ellipsizing