While rerunning some local tests, I encountered a new error:
+ lago ovirt deploy
@ Deploy oVirt environment:
  # Deploy environment:
    * [Thread-2] Deploy VM lago-vagrant-engine:
    * [Thread-3] Deploy VM lago-vagrant-host-0:
    * [Thread-3] Deploy VM lago-vagrant-host-0: Success (in 0:00:45)
STDERR
+ MAIN_NFS_DEV=disk/by-id/scsi-0QEMU_QEMU_HARDDISK_2
+ ISCSI_DEV=disk/by-id/scsi-0QEMU_QEMU_HARDDISK_3
+ NUM_LUNS=5
+ EL7='release 7\.[0-9]'
+ main
+ install_deps
+ systemctl disable --now kdump.service
+ yum install -y --downloaddir=/dev/shm nfs-utils rpcbind lvm2 targetcli sg3_utils iscsi-initiator-utils lsscsi policycoreutils-python
Error: Package: gssproxy-0.7.0-4.el7.x86_64 (alocalsync)
           Requires: krb5-libs >= 1.15
           Installed: krb5-libs-1.14.1-27.el7_3.x86_64 (installed)
               krb5-libs = 1.14.1-27.el7_3
           Available: krb5-libs-1.14.1-26.el7.i686 (base)
               krb5-libs = 1.14.1-26.el7

      - STDERR
+ MAIN_NFS_DEV=disk/by-id/scsi-0QEMU_QEMU_HARDDISK_2
+ ISCSI_DEV=disk/by-id/scsi-0QEMU_QEMU_HARDDISK_3
+ NUM_LUNS=5
+ EL7='release 7\.[0-9]'
+ main
+ install_deps
+ systemctl disable --now kdump.service
+ yum install -y --downloaddir=/dev/shm nfs-utils rpcbind lvm2 targetcli sg3_utils iscsi-initiator-utils lsscsi policycoreutils-python
Error: Package: gssproxy-0.7.0-4.el7.x86_64 (alocalsync)
           Requires: krb5-libs >= 1.15
           Installed: krb5-libs-1.14.1-27.el7_3.x86_64 (installed)
               krb5-libs = 1.14.1-27.el7_3
           Available: krb5-libs-1.14.1-26.el7.i686 (base)
               krb5-libs = 1.14.1-26.el7
    * [Thread-2] Deploy VM lago-vagrant-engine: ERROR (in 0:01:05)
Error while running thread
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/lago/utils.py", line 58, in _ret_via_queue
    queue.put({'return': func()})
  File "/usr/lib/python2.7/site-packages/lago/prefix.py", line 1610, in _deploy_host
    (script, ret, host.name(), ),
RuntimeError: /home/myoung/repos/github/ovirt-system-tests/deployment-vagrant/default/scripts/_home_myoung_repos_github_ovirt-system-tests_vagrant_.._common_deploy-scripts_setup_storage_unified_el7.sh failed with status 1 on lago-vagrant-engine
Error while running thread
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/lago/utils.py", line 58, in _ret_via_queue
    queue.put({'return': func()})
  File "/usr/lib/python2.7/site-packages/lago/prefix.py", line 1610, in _deploy_host
    (script, ret, host.name(), ),
RuntimeError: /home/myoung/repos/github/ovirt-system-tests/deployment-vagrant/default/scripts/_home_myoung_repos_github_ovirt-system-tests_vagrant_.._common_deploy-scripts_setup_storage_unified_el7.sh failed with status 1 on lago-vagrant-engine
  # Deploy environment: ERROR (in 0:01:05)
@ Deploy oVirt environment: ERROR (in 0:01:05)

Its the same error as here: http://jenkins.ovirt.org/view/oVirt%20system%20tests/job/ovirt-system-tests_master_check-patch-el7-x86_64/1683/console