guestroot: add "--disk-space 500000" to host params.
guestroot: add --disk-space option.
Merge branch 'master' into release-v13.08
Merge branch 'master' into release-v13.08
Merge branch 'master' into release-v13.08
Merge branch 'master' into release-v13.08
Merge branch 'master' into release-v13.08
Merge branch 'release-v13.08'