Update petertodd seed DNS to .net

[petertodd]

Also, add mainnet seed.

I changed the DNS to .net due to issues with DNS blacklists. The .org domain will stay up for now. But I may have to take it down in the future.

[coveralls]

Pull Request Test Coverage Report for Build 7140520302

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 12 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.02%) to 56.066%

---

Files with Coverage Reduction	New Missed Lines	%
mempool/mempool.go	1	66.75%
connmgr/connmanager.go	2	86.27%
peer/peer.go	9	73.49%
<!--	Total:	12		-->

Totals
Change from base Build 7122036592:	-0.02%
Covered Lines:	27960
Relevant Lines:	49870

---

💛 - Coveralls

[dstadulis]

tACK - confirmed that DNS records corroborate co-ownership of both domains:

[snip]
seed.tbtc.petertodd.org. 172    IN  CNAME   seed.tbtc.petertodd.net.
[snip]
seed.tbtc.petertodd.org is an alias for seed.tbtc.petertodd.net.

$ dig  seed.tbtc.petertodd.org

; <<>> DiG 9.10.6 <<>> seed.tbtc.petertodd.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 56672
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 25, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1280
;; QUESTION SECTION:
;seed.tbtc.petertodd.org.   IN  A

;; ANSWER SECTION:
seed.tbtc.petertodd.org. 172    IN  CNAME   seed.tbtc.petertodd.net.
seed.tbtc.petertodd.net. 2108   IN  A   34.91.255.249
seed.tbtc.petertodd.net. 2108   IN  A   99.192.223.18
seed.tbtc.petertodd.net. 2108   IN  A   185.180.220.12
seed.tbtc.petertodd.net. 2108   IN  A   188.40.164.205
seed.tbtc.petertodd.net. 2108   IN  A   71.13.92.62
seed.tbtc.petertodd.net. 2108   IN  A   64.190.113.17
seed.tbtc.petertodd.net. 2108   IN  A   5.188.119.196
seed.tbtc.petertodd.net. 2108   IN  A   35.207.3.50
seed.tbtc.petertodd.net. 2108   IN  A   23.93.101.158
seed.tbtc.petertodd.net. 2108   IN  A   72.211.1.222
seed.tbtc.petertodd.net. 2108   IN  A   51.210.208.202
seed.tbtc.petertodd.net. 2108   IN  A   132.145.213.181
seed.tbtc.petertodd.net. 2108   IN  A   39.98.193.129
seed.tbtc.petertodd.net. 2108   IN  A   178.21.118.96
seed.tbtc.petertodd.net. 2108   IN  A   51.210.220.135
seed.tbtc.petertodd.net. 2108   IN  A   18.162.45.10
seed.tbtc.petertodd.net. 2108   IN  A   204.16.241.8
seed.tbtc.petertodd.net. 2108   IN  A   88.198.91.246
seed.tbtc.petertodd.net. 2108   IN  A   161.35.211.215
seed.tbtc.petertodd.net. 2108   IN  A   5.189.162.76
seed.tbtc.petertodd.net. 2108   IN  A   122.248.200.20
seed.tbtc.petertodd.net. 2108   IN  A   13.229.104.97
seed.tbtc.petertodd.net. 2108   IN  A   138.201.51.42
seed.tbtc.petertodd.net. 2108   IN  A   142.44.138.161

;; Query time: 42 msec
;; SERVER: 10.0.254.2#53(10.0.254.2)
;; WHEN: Fri Dec 08 19:47:06 CET 2023
;; MSG SIZE  rcvd: 473

$ host seed.tbtc.petertodd.org
seed.tbtc.petertodd.org is an alias for seed.tbtc.petertodd.net.
seed.tbtc.petertodd.net has address 35.207.3.50
seed.tbtc.petertodd.net has address 23.93.101.158
seed.tbtc.petertodd.net has address 72.211.1.222
seed.tbtc.petertodd.net has address 51.210.208.202
seed.tbtc.petertodd.net has address 132.145.213.181
seed.tbtc.petertodd.net has address 39.98.193.129
seed.tbtc.petertodd.net has address 178.21.118.96
seed.tbtc.petertodd.net has address 51.210.220.135
seed.tbtc.petertodd.net has address 18.162.45.10
seed.tbtc.petertodd.net has address 204.16.241.8
seed.tbtc.petertodd.net has address 88.198.91.246
seed.tbtc.petertodd.net has address 161.35.211.215
seed.tbtc.petertodd.net has address 5.189.162.76
seed.tbtc.petertodd.net has address 122.248.200.20
seed.tbtc.petertodd.net has address 13.229.104.97
seed.tbtc.petertodd.net has address 138.201.51.42
seed.tbtc.petertodd.net has address 142.44.138.161
seed.tbtc.petertodd.net has address 34.91.255.249
seed.tbtc.petertodd.net has address 99.192.223.18
seed.tbtc.petertodd.net has address 185.180.220.12
seed.tbtc.petertodd.net has address 188.40.164.205
seed.tbtc.petertodd.net has address 71.13.92.62
seed.tbtc.petertodd.net has address 64.190.113.17
seed.tbtc.petertodd.net has address 5.188.119.196
seed.tbtc.petertodd.net has IPv6 address 2600:3c02::f03c:93ff:fe4b:c543
seed.tbtc.petertodd.net has IPv6 address 2001:41d0:800:3d4c::
seed.tbtc.petertodd.net has IPv6 address 2a00:1298:8001::6542
seed.tbtc.petertodd.net has IPv6 address 2a01:4f9:6a:4719::2
seed.tbtc.petertodd.net has IPv6 address 2a01:4f8:121:4072::2
seed.tbtc.petertodd.net has IPv6 address 2a01:4f8:271:13af::2
seed.tbtc.petertodd.net has IPv6 address 2001:41d0:303:146e::
seed.tbtc.petertodd.net has IPv6 address 2a01:4f8:222:2017::2
seed.tbtc.petertodd.net has IPv6 address 2a01:4f9:3b:2566::2
seed.tbtc.petertodd.net has IPv6 address 2001:41d0:303:e087::
seed.tbtc.petertodd.net has IPv6 address 2001:41d0:303:87b9::
seed.tbtc.petertodd.net has IPv6 address 240e:660:ad:0:101:16:e415:16da
seed.tbtc.petertodd.net has IPv6 address 2604:a880:2:d0::65:c001