Add, update, remove, or reorder playbook procedures. The procedures
specified in the request body will replace all existing procedures
for the playbook.

Adding/Updating Procedures

In the request body, any procedure that does not have an Id will
be assigned an Id, created, and then added to the resulting procedure list.

Procedures in the request body that do have an Id will be
"upserted," that is, if a procedure with that Id exists, it will be
updated to match the given contents and ordering; if it does not exist,
it will be added in the given order.

Removing/Reordering Procedures

Any existing procedure that is not listed in the request body will
be removed.

The order of the list in the request body will become the
procedure order.