Add a module for generating random short ID strings

These can be used to ensure uniqueness of names when creating resources in
OpenStack services.

Change-Id: Ifb048fd8ec676b7fd6a15c5d4a39bfc98f0aeca9
Signed-off-by: Zane Bitter <zbitter@redhat.com>
Use a short_id for naming Swift containers

Change-Id: Id6ee6b92f05326e3feda3f2b770fff5864e38e19
Signed-off-by: Zane Bitter <zbitter@redhat.com>
Use a short_id for naming S3 containers

Change-Id: Iba8ea4eb536d58e1332897cec2059aebbb41b28a
Signed-off-by: Zane Bitter <zbitter@redhat.com>