Move kasp migration tests to different directory

The kasp system test was getting pretty large, and more tests are on
the way. Time to split up. Move tests that are related to migrating
to dnssec-policy to a separate directory 'keymgr2kasp'.

(cherry picked from commit 5389172111)

bin/tests/system/keymgr2kasp/ns3/setup.sh

@@ -0,0 +1,87 @@
+#!/bin/sh -e
+#
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+# shellcheck source=conf.sh
+. ../../conf.sh
+
+echo_i "ns3/setup.sh"
+
+setup() {
+	zone="$1"
+	echo_i "setting up zone: $zone"
+	zonefile="${zone}.db"
+	infile="${zone}.db.infile"
+}
+
+private_type_record() {
+	_zone=$1
+	_algorithm=$2
+	_keyfile=$3
+
+	_id=$(keyfile_to_key_id "$_keyfile")
+
+	printf "%s. 0 IN TYPE65534 %s 5 %02x%04x0000\n" "$_zone" "\\#" "$_algorithm" "$_id"
+}
+
+
+# Make lines shorter by storing key states in environment variables.
+H="HIDDEN"
+R="RUMOURED"
+O="OMNIPRESENT"
+U="UNRETENTIVE"
+
+# Set up a zone with auto-dnssec maintain to migrate to dnssec-policy.
+setup migrate.kasp
+echo "$zone" >> zones
+ksktimes="-P now -A now -P sync now"
+zsktimes="-P now -A now"
+KSK=$($KEYGEN -a $DEFAULT_ALGORITHM -L 7200 -f KSK $ksktimes $zone 2> keygen.out.$zone.1)
+ZSK=$($KEYGEN -a $DEFAULT_ALGORITHM -L 7200        $zsktimes $zone 2> keygen.out.$zone.2)
+cat template.db.in "${KSK}.key" "${ZSK}.key" > "$infile"
+private_type_record $zone $DEFAULT_ALGORITHM_NUMBER "$KSK" >> "$infile"
+private_type_record $zone $DEFAULT_ALGORITHM_NUMBER "$ZSK" >> "$infile"
+$SIGNER -S -x -s now-1h -e now+2w -o $zone -O full -f $zonefile $infile > signer.out.$zone.1 2>&1
+
+# Set up a zone with auto-dnssec maintain to migrate to dnssec-policy, but this
+# time the existing keys do not match the policy.  The existing keys are
+# RSASHA1 keys, and will be migrated to a dnssec-policy that dictates
+# ECDSAP256SHA256 keys.
+setup migrate-nomatch-algnum.kasp
+echo "$zone" >> zones
+Tds="now-3h"     # Time according to dnssec-policy that DS will be OMNIPRESENT
+Tkey="now-3900s" # DNSKEY TTL + propagation delay
+Tsig="now-12h"   # Zone's maximum TTL + propagation delay
+ksktimes="-P ${Tkey} -A ${Tkey} -P sync ${Tds}"
+zsktimes="-P ${Tsig} -A ${Tsig}"
+KSK=$($KEYGEN -a RSASHA1 -b 2048 -L 300 -f KSK $ksktimes $zone 2> keygen.out.$zone.1)
+ZSK=$($KEYGEN -a RSASHA1 -b 1024 -L 300        $zsktimes $zone 2> keygen.out.$zone.2)
+cat template.db.in "${KSK}.key" "${ZSK}.key" > "$infile"
+private_type_record $zone 5 "$KSK" >> "$infile"
+private_type_record $zone 5 "$ZSK" >> "$infile"
+$SIGNER -S -x -s now-1h -e now+2w -o $zone -O full -f $zonefile $infile > signer.out.$zone.1 2>&1
+
+# Set up a zone with auto-dnssec maintain to migrate to dnssec-policy, but this
+# time the existing keys do not match the policy.  The existing keys are
+# 1024 bits RSASHA1 keys, and will be migrated to a dnssec-policy that
+# dictates 2048 bits RSASHA1 keys.
+setup migrate-nomatch-alglen.kasp
+echo "$zone" >> zones
+Tds="now-3h"     # Time according to dnssec-policy that DS will be OMNIPRESENT
+Tkey="now-3900s" # DNSKEY TTL + propagation delay
+Tsig="now-12h"   # Zone's maximum TTL + propagation delay
+ksktimes="-P ${Tkey} -A ${Tkey} -P sync ${Tds}"
+zsktimes="-P ${Tsig} -A ${Tsig}"
+KSK=$($KEYGEN -a RSASHA1 -b 1024 -L 300 -f KSK $ksktimes $zone 2> keygen.out.$zone.1)
+ZSK=$($KEYGEN -a RSASHA1 -b 1024 -L 300        $zsktimes $zone 2> keygen.out.$zone.2)
+cat template.db.in "${KSK}.key" "${ZSK}.key" > "$infile"
+private_type_record $zone 5 "$KSK" >> "$infile"
+private_type_record $zone 5 "$ZSK" >> "$infile"
+$SIGNER -S -x -s now-1h -e now+2w -o $zone -O full -f $zonefile $infile > signer.out.$zone.1 2>&1