Just a note to anyone else who may be interested. This may be obvious but it wasn't to me at first, The "ipa dnszone-mod ... --update-policy=..." command wipes out the existing BIND update policy. So what would seem to me to be the correct procedure is to do "ipa dnszone-show --all" first to get the existing policy. Then append the new policy to the existing. This is what ultimatley worked for me (all one line).
ipa dnszone-mod inside.lan --update-policy="grant INSIDE.LAN krb5-self * A; grant INSIDE.LAN krb5-self * AAAA; grant INSIDE.LAN krb5-self * SSHFP; grant dhcpupdate zonesub A; grant dhcpupdate zonesub TXT; grant dhcpupdate zonesub PTR;"
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