The following error is printed when attempting to delete a JDBC connetion pool
with a dependent resources:
An error has occurred
returned a response status of 400
Steps to reproduce:
1. Create a JDBC Connetion Pool, e.g. MyPool
2. Create a JDBC Resource that uses MyPool, e.g. MyResource.
3. Attempt to delete MyPool - a prompt is displayed warning that dependent
resources will be deleted, however after clicking OK the above error is displayed.