Update ROA max-length and add DNS nameserver registration

ROA Updates:
- IPv4: Increase max-length from 26 to 29
  Authorizes: 172.22.78.0/26 through 172.22.78.{0,8,16,...}/29
- IPv6: Increase max-length from 48 to 60
  Authorizes: fde9:2556:d0d::/48 through fde9:2556:d0d:{10,20,30,...}::/60

Reason: Implementing per-node subnet announcements for fine-grain
BGP traffic engineering. Each edge router announces dedicated subnet:
- yvr-02: 172.22.78.0/29, fde9:2556:d0d:10::/60
- hkg-01: 172.22.78.8/29, fde9:2556:d0d:20::/60
- yvr-01: 172.22.78.16/29, fde9:2556:d0d:30::/60

DNS Registration:
- Domain: timxzhao.dn42
- Nameservers: ns1/ns2.timxzhao.dn42
- ns1: 172.22.78.53, fde9:2556:d0d::53 (anycast)
- ns2: 172.22.78.54, fde9:2556:d0d::54 (anycast)
- Reverse DNS delegation added to inetnum/inet6num objects

data/dns/timxzhao.dn42

@@ -0,0 +1,9 @@
+domain:             timxzhao.dn42
+admin-c:            TIMXZHAO-DN42
+tech-c:             TIMXZHAO-DN42
+mnt-by:             TIMXZHAO-MNT
+nserver:            ns1.timxzhao.dn42 172.22.78.53
+nserver:            ns1.timxzhao.dn42 fde9:2556:d0d::53
+nserver:            ns2.timxzhao.dn42 172.22.78.54
+nserver:            ns2.timxzhao.dn42 fde9:2556:d0d::54
+source:             DN42

data/inet6num/fde9:2556:d0d::_48

@@ -7,4 +7,6 @@ admin-c:            TIMXZHAO-DN42
 tech-c:             TIMXZHAO-DN42
 mnt-by:             TIMXZHAO-MNT
 status:             ASSIGNED
+nserver:            ns1.timxzhao.dn42
+nserver:            ns2.timxzhao.dn42
 source:             DN42

data/inetnum/172.22.78.0_26

@@ -7,4 +7,6 @@ admin-c:            TIMXZHAO-DN42
 tech-c:             TIMXZHAO-DN42
 mnt-by:             TIMXZHAO-MNT
 status:             ASSIGNED
+nserver:            ns1.timxzhao.dn42
+nserver:            ns2.timxzhao.dn42
 source:             DN42

data/route/172.22.78.0_26

@@ -1,5 +1,5 @@
 route:              172.22.78.0/26
 origin:             AS4242423388
-max-length:         26
+max-length:         29
 mnt-by:             TIMXZHAO-MNT
 source:             DN42

data/route6/fde9:2556:d0d::_48

@@ -1,5 +1,5 @@
 route6:             fde9:2556:d0d::/48
 origin:             AS4242423388
-max-length:         48
+max-length:         60
 mnt-by:             TIMXZHAO-MNT
 source:             DN42