Revert "Fix getting stack ip for heatclient > 1.5.1"

We need to bump heatclient version on CI to at least Mitaka
(1.1.1) first.

This reverts commit 23df6761a0f2cfe4d1287a525e472c9a8c6c5368.

Change-Id: Ifba27ffea965ee093ace4265a2520fd512dad973
1 file changed