Update deprecated service_neutron_metadata_proxy variable

Commit c2697f8735a38fb05d54ff4f82110829ead85ee9 moved
service_neutron_metadata_proxy to the neutron section.

Change-Id: I08cdaae9bded1797c663d1bfeaae61535ce64099
Re-order stack.sh 2: target dir setup

Part 2 of a series

Re-order the setup and check bits in the top portion of stack.sh to
have a logical flow with similar things done together.

No behaviour changes are intended aside from the order of execution.
Any such changes are bugs.

* Consolidate DEST dir setup
* Move rpc & database init to just before project init

Change-Id: I2af1d4ed32ec34417c04592bf94fe645bb97f831
Merge "Re-order stack.sh 2: target dir setup"
Re-order stack.sh 3: logging and error traps

Part 3 of a series

Re-order the setup and check bits in the top portion of stack.sh to
have a logical flow with similar things done together.

No behaviour changes are intended aside from the order of execution.
Any such changes are bugs.

* Move logging and error configuration earlier to cover initial project setup.

Change-Id: Ib16bbe20f224b1cf5e86c7a2fda0d9472c108873
Merge "Update deprecated service_neutron_metadata_proxy variable"
Merge branch 'reorder-stack.sh' into dt-test
Merge branch 'cinder-backend-netapp' into dt-test
Merge branch 'cinder-backend-solidfire' into dt-test
Merge branch 'erlang-b-gone' into dt-test
Merge branch 'conf-tempest' into dt-test
Merge branch 'test-service-functions' into dt-test
Merge branch 'exercise-refresh' into dt-test