add coverage for es utils
add coverage for es utils

ssadedin/seqr,macarthur-lab/seqr,macarthur-lab/seqr,ssadedin/seqr,macarthur-lab/seqr,ssadedin/seqr,macarthur-lab/seqr,macarthur-lab/seqr,ssadedin/seqr,ssadedin/seqr