Add support for SCYLLA_USE_METADATA_ID and skip metadata#457

andrzej-jackowski-scylladb wants to merge 2 commits into

scylladb:masterscylladb/python-driver:masterfrom

andrzej-jackowski-scylladb:scylla_use_metadata_idandrzej-jackowski-scylladb/python-driver:scylla_use_metadata_idCopy head branch name to clipboard