Add 'weight' field to vm_type DB record
Implement schema migration for vm_types table
Modify vm_type server handler to support weighted VM
Modify rvpevmtype command to show VM weight
Modify VM server handler to support weighted VM
Modify output message of rvpeuser info & show
Modify help message of rvpevmtype command
Modify help message of rvpeuser command
Merge branch 'master' into devel/weighted_vm
Update release note
Merge branch 'master' into devel/weighted_vm
Merge branch 'master' into devel/weighted_vm
Update documents
Merge branch 'devel/weighted_vm'