CLOUDSTACK-5970: UI > network menu > guest network section > select non-VPC isolated network with SourceNAT enabled > IP Address section > select sourceNAT IP > show Configuration tab.
(cherry picked from commit 1ad7bce69b764d3d833a8682ec5016bfbeea394c)

Signed-off-by: Animesh Chaturvedi <animesh@apache.org>