Use correct bit when writing PIV certificate object when certificate is gziped

NIST 800-73-3 clarified the CertInfo byte for gzipped certs should be 0x01
 piv-tool was writing the byte as 0x80.
 Earlier version of 800-73 were not clear, and card-piv.c code used to read would accept either
  0x80 or 0x01. This code will still accept either so older cards will still work.