Revert commits that increased CC flakes.

Revert "Remove ModelManager in spec_helper"

This reverts commit 5d1bde0b0962065aeb933136fd9993a164e1ba79.

Revert "Added create hook to ModelManager"

This reverts commit 14dd29ed54fb58dbb066f6e5bebcf5ba7481cd5a.

Revert "Added cleanup of some leaky tests"

This reverts commit 9ea3b2f338eaa8bf116fcaeaab08467b8c51f4ef.

Revert "Fix broken spec"

This reverts commit 187640fffdec7b23460406a4ecc8b33b3999dbcf.

Revert "Re-enable non_transactional for a spec that broke"

This reverts commit f151c6512c41d7cc6d3713d085f4236e91c21172.

Revert "Mark a test that broke as non_transactional"

This reverts commit 53a993d92e287c83c7cd90b3cfc96735a2ca3436.

Revert "Reduce the amount of non-transactional tests"

This reverts commit 11665ccdbc21cc3e8bdf9c9dcf3d61ce4b5bb598.

Revert "Added buildpack test db cleanup"

This reverts commit ce65f7f8d580411caa5d69a7bf73958afc4face4.

Revert "Destroying Stacks instead of deleting them"

This reverts commit 10d0f59a36543acfc82c7b5ff6d59d033375ac4f.

Revert "Added ModelManager to handle cleaning up models"

This reverts commit 6bc264a8b8d453f87f1c608f35934d754467a133.

Revert "Refactored restage test to be transactional"

This reverts commit 33da98da3612c4fc304fb3e26aa7990fedf5d5c3.

Revert "Implement unauthenticated logic for /v2/service_plans and /v2/services"

This reverts commit 8729816ca32a5f9b72658fd234915ec498c97ebf.
Protect space spec from flakes

* Compare arrays ignoring order as we were seeing instances in which the order
  would be swapped

Signed-off-by: Nicholas Calugar <ncalugar@pivotallabs.com>
BlobstoreUrlGenerator stub is more resilient.

Signed-off-by: Nicholas Calugar <ncalugar@pivotallabs.com>