convert-keyring: Use Parcelkeeper compresstypes
convert-keyring: Use Parcelkeeper compresstypes

- When writing the SQL keyring, use the compresstype values defined by
Parcelkeeper rather than the ones used for the old binary keyring

- Remove misleading KR_COMPRESS_LZF, since it was never used by anything

cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr