Database package along with migrations and migrate command giving
permissions-api it's own database to store details into.

Initial support is for Roles Get, Create, Update and Delete.

Signed-off-by: Mike Mason <[email protected]>

This integrates the new database which contains role metadata into the
query engine as well as updates the http api to expose this new
information.

Signed-off-by: Mike Mason <[email protected]>

Signed-off-by: Mike Mason <[email protected]>

Signed-off-by: Mike Mason <[email protected]>

Updated CreateRole, UpdateRole and DeleteRole to CreateRoleTransaction,
UpdateRoleTransaction and DeleteRoleTransaction to make it more clear
that a transaction is being started.

Additionally, the comments on these methods have been updated to include
statements that Commit or Rollback must be called to ensure the database
lifts all locks on rows which are affected.

Previously, the method names made it appear as though the action was
taken and completed. However this could lead to hung connections and
rows.

The new names make it clear that a new transaction is being started.
The returning struct only has two methods Commit and Rollback in
addition to the Record attribute resulting in a simple structure.

Signed-off-by: Mike Mason <[email protected]>

Signed-off-by: Mike Mason <[email protected]>

Signed-off-by: Mike Mason <[email protected]>

Signed-off-by: Mike Mason <[email protected]>

…roperly

Signed-off-by: Mike Mason <[email protected]>

Since we're working with multiple backends, this allows us to place a
lock early and ensure a separate request doesn't conflict with an
in-flight change.

Signed-off-by: Mike Mason <[email protected]>

Signed-off-by: Mike Mason <[email protected]>