IPA does not return 'root_uuid' as part of command status when
provisioning of whole disk image is done using 'agent' deploy
interface from ironic. This commit fixes the issue.
Also updated Dockerfile to include package 'bsdmainutils' related
to 'hexdump' binary.
Change-Id: I89597fe4a704686fe31c064c3443fd8404a300e5
Partial-Bug: #1713916