Revert "add moniotr option"

This reverts commit 5cf43478d55e19570907a3dae6a313396457d7c2.
Revert "Revert "add moniotr option""

This reverts commit 78ef31fee7fe0589a682b0edfca9e70ee8360133.
Merge branch 'master' of https://github.com/VirtualMachineManager/post-copy-blockmigration
Merge branch 'master' of https://github.com/VirtualMachineManager/post-copy-blockmigration
add block-stream option