Bug 25048: Regression tests

Bug 25048: Regression tests

This patch adds regression tests for the response bodies and statuses on
DELETE actions against existing API routes. This is just enforcing the
existing (voted) Coding guidelines for the API (tm).

To test:
1. Apply this patch
2. Run:
   $ kshell
  k$ prove t/db_dependent/api/v1/*.t
=> FAIL: Several routes have problems

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>