If network calls to retrieve ports and floating IPs take too long,
then the project > instances page cannot be loaded. This config
allows disabling the network calls when loading the page with
minor side-effects, as a workaround to avoid downtime while other
performance optimizations can be done on the side to allow
the page the load so the workaround is no longer needed.
Closes-bug: #2051003
Related-bug: #2045168
Change-Id: Iedad6ef48cbe0b776594f4ad8276d3d713cd360c
(cherry picked from commit 6b93e9dd87)
(cherry picked from commit 45a86be78a)
(cherry picked from commit 1ec179bb9d)
(cherry picked from commit 9e2ae8e65b)
(cherry picked from commit b2af81e75d)
(cherry picked from commit 7eb985778c)
(cherry picked from commit 560adf4ac3)
5d4080d351