Changes from v9:
rename query-migrtion-supported-capabilities to
query-migrate-supported-capabilities
rename 'info migration_supported_capabilities' to 'info
migrate_supported_capabilities'
renamse migrate_set_cachesize to migrate_set_cache_size.
Add missing state to qmp_query_migrate_supported_c
Changes from v9:
rename query-migrtion-supported-capabilities to
query-migrate-supported-capabilities
rename 'info migration_supported_capabilities' to 'info
migrate_supported_capabilities'
renamse migrate_set_cachesize to migrate_set_cache_size.
Add missing state to qmp_query_migrate_supported_c
