Update testnet bootnode dns name (#1712)

# Description
Update the DNS name of bootnodes to unify the deployment. 

Each bootnode have 3 port exposed: `30333, 30334, 443`. Before, we had
different DNS names for `30333, 30334` and `443` ports. It may confuse
people and give the impression that it is two different nodes. Fixing it
by using a single domain for all

polkadot/node/service/chain-specs/rococo.json

@@ -3,14 +3,22 @@
   "id": "rococo_v2_2",
   "chainType": "Live",
   "bootNodes": [
-    "/dns/rococo-bootnode-0.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWGikJMBmRiG5ofCqn8aijCijgfmZR5H9f53yUF3srm6Nm",
-    "/dns/rococo-bootnode-1.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWLDfH9mHRCidrd5NfQjp7rRMUcJSEUwSvEKyu7xU2cG3d",
-    "/dns/rococo-bootnode-2.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWSikgbrcWjVgSed7r1uXk4TeAieDnHKtrPDVZBu5XkQha",
-    "/dns/rococo-bootnode-3.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWPeKuW1BBPv4pNr8xqEv7jqy7rQnS3oq9U7xTCvj9qt2k",
-    "/dns/rococo-bootnode-4.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWNy7K8TNaP2Whcp3tsjBVUg2HcKMUvAArsimjvd1g31w4",
-    "/dns/rococo-bootnode-5.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWAVV9DZfvJp2brvs5zcQDTBFxNmEFJKy2dsvezWL4Bmy8",
-    "/dns/rococo-bootnode-6.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWM3hvXvaShyp7drQCavFHuwobkYdnCp2uHU5iRRAQwsw2",
-    "/dns/rococo-bootnode-7.parity-testnet.parity.io/tcp/30333/p2p/12D3KooWSbGtxfWCwn1tdmfZYESbmxzbTG2LKwKUrioDaZBcdMY4",
+    "/dns/rococo-bootnode-0.polkadot.io/tcp/30333/p2p/12D3KooWGikJMBmRiG5ofCqn8aijCijgfmZR5H9f53yUF3srm6Nm",
+    "/dns/rococo-bootnode-1.polkadot.io/tcp/30333/p2p/12D3KooWLDfH9mHRCidrd5NfQjp7rRMUcJSEUwSvEKyu7xU2cG3d",
+    "/dns/rococo-bootnode-2.polkadot.io/tcp/30333/p2p/12D3KooWSikgbrcWjVgSed7r1uXk4TeAieDnHKtrPDVZBu5XkQha",
+    "/dns/rococo-bootnode-3.polkadot.io/tcp/30333/p2p/12D3KooWPeKuW1BBPv4pNr8xqEv7jqy7rQnS3oq9U7xTCvj9qt2k",
+    "/dns/rococo-bootnode-4.polkadot.io/tcp/30333/p2p/12D3KooWNy7K8TNaP2Whcp3tsjBVUg2HcKMUvAArsimjvd1g31w4",
+    "/dns/rococo-bootnode-5.polkadot.io/tcp/30333/p2p/12D3KooWAVV9DZfvJp2brvs5zcQDTBFxNmEFJKy2dsvezWL4Bmy8",
+    "/dns/rococo-bootnode-6.polkadot.io/tcp/30333/p2p/12D3KooWM3hvXvaShyp7drQCavFHuwobkYdnCp2uHU5iRRAQwsw2",
+    "/dns/rococo-bootnode-7.polkadot.io/tcp/30333/p2p/12D3KooWSbGtxfWCwn1tdmfZYESbmxzbTG2LKwKUrioDaZBcdMY4",
+    "/dns/rococo-bootnode-0.polkadot.io/tcp/30334/ws/p2p/12D3KooWGikJMBmRiG5ofCqn8aijCijgfmZR5H9f53yUF3srm6Nm",
+    "/dns/rococo-bootnode-1.polkadot.io/tcp/30334/ws/p2p/12D3KooWLDfH9mHRCidrd5NfQjp7rRMUcJSEUwSvEKyu7xU2cG3d",
+    "/dns/rococo-bootnode-2.polkadot.io/tcp/30334/ws/p2p/12D3KooWSikgbrcWjVgSed7r1uXk4TeAieDnHKtrPDVZBu5XkQha",
+    "/dns/rococo-bootnode-3.polkadot.io/tcp/30334/ws/p2p/12D3KooWPeKuW1BBPv4pNr8xqEv7jqy7rQnS3oq9U7xTCvj9qt2k",
+    "/dns/rococo-bootnode-4.polkadot.io/tcp/30334/ws/p2p/12D3KooWNy7K8TNaP2Whcp3tsjBVUg2HcKMUvAArsimjvd1g31w4",
+    "/dns/rococo-bootnode-5.polkadot.io/tcp/30334/ws/p2p/12D3KooWAVV9DZfvJp2brvs5zcQDTBFxNmEFJKy2dsvezWL4Bmy8",
+    "/dns/rococo-bootnode-6.polkadot.io/tcp/30334/ws/p2p/12D3KooWM3hvXvaShyp7drQCavFHuwobkYdnCp2uHU5iRRAQwsw2",
+    "/dns/rococo-bootnode-7.polkadot.io/tcp/30334/ws/p2p/12D3KooWSbGtxfWCwn1tdmfZYESbmxzbTG2LKwKUrioDaZBcdMY4",
     "/dns/rococo-bootnode-0.polkadot.io/tcp/443/wss/p2p/12D3KooWGikJMBmRiG5ofCqn8aijCijgfmZR5H9f53yUF3srm6Nm",
     "/dns/rococo-bootnode-1.polkadot.io/tcp/443/wss/p2p/12D3KooWLDfH9mHRCidrd5NfQjp7rRMUcJSEUwSvEKyu7xU2cG3d",
     "/dns/rococo-bootnode-2.polkadot.io/tcp/443/wss/p2p/12D3KooWSikgbrcWjVgSed7r1uXk4TeAieDnHKtrPDVZBu5XkQha",

polkadot/node/service/chain-specs/westend.json

@@ -2,16 +2,18 @@
   "name": "Westend",
   "id": "westend2",
   "bootNodes": [
-    "/dns/0.westend.paritytech.net/tcp/30333/p2p/12D3KooWKer94o1REDPtAhjtYR4SdLehnSrN8PEhBnZm5NBoCrMC",
-    "/dns/0.westend.paritytech.net/tcp/30334/ws/p2p/12D3KooWKer94o1REDPtAhjtYR4SdLehnSrN8PEhBnZm5NBoCrMC",
-    "/dns/1.westend.paritytech.net/tcp/30333/p2p/12D3KooWPVPzs42GvRBShdUMtFsk4SvnByrSdWqb6aeAAHvLMSLS",
-    "/dns/1.westend.paritytech.net/tcp/30334/ws/p2p/12D3KooWPVPzs42GvRBShdUMtFsk4SvnByrSdWqb6aeAAHvLMSLS",
-    "/dns/2.westend.paritytech.net/tcp/30333/p2p/12D3KooWByVpK92hMi9CzTjyFg9cPHDU5ariTM3EPMq9vdh5S5Po",
-    "/dns/2.westend.paritytech.net/tcp/30334/ws/p2p/12D3KooWByVpK92hMi9CzTjyFg9cPHDU5ariTM3EPMq9vdh5S5Po",
-    "/dns/3.westend.paritytech.net/tcp/30333/p2p/12D3KooWGi1tCpKXLMYED9y28QXLnwgD4neYb1Arqq4QpeV1Sv3K",
-    "/dns/3.westend.paritytech.net/tcp/30334/ws/p2p/12D3KooWGi1tCpKXLMYED9y28QXLnwgD4neYb1Arqq4QpeV1Sv3K",
-    "/dns/westend-connect-0.polkadot.io/tcp/443/wss/p2p/12D3KooWNg8iUqhux7X7voNU9Nty5pzehrFJwkQwg1CJnqN3CTzE",
-    "/dns/westend-connect-1.polkadot.io/tcp/443/wss/p2p/12D3KooWAq2A7UNFS6725XFatD5QW7iYBezTLdAUx1SmRkxN79Ne",
+    "/dns/westend-bootnode-0.polkadot.io/tcp/30333/p2p/12D3KooWKer94o1REDPtAhjtYR4SdLehnSrN8PEhBnZm5NBoCrMC",
+    "/dns/westend-bootnode-0.polkadot.io/tcp/30334/ws/p2p/12D3KooWKer94o1REDPtAhjtYR4SdLehnSrN8PEhBnZm5NBoCrMC",
+    "/dns/westend-bootnode-0.polkadot.io/tcp/443/wss/p2p/12D3KooWKer94o1REDPtAhjtYR4SdLehnSrN8PEhBnZm5NBoCrMC",
+    "/dns/westend-bootnode-1.polkadot.io/tcp/30333/p2p/12D3KooWPVPzs42GvRBShdUMtFsk4SvnByrSdWqb6aeAAHvLMSLS",
+    "/dns/westend-bootnode-1.polkadot.io/tcp/30334/ws/p2p/12D3KooWPVPzs42GvRBShdUMtFsk4SvnByrSdWqb6aeAAHvLMSLS",
+    "/dns/westend-bootnode-1.polkadot.io/tcp/443/wss/p2p/12D3KooWPVPzs42GvRBShdUMtFsk4SvnByrSdWqb6aeAAHvLMSLS",
+    "/dns/westend-bootnode-2.polkadot.io/tcp/30333/p2p/12D3KooWByVpK92hMi9CzTjyFg9cPHDU5ariTM3EPMq9vdh5S5Po",
+    "/dns/westend-bootnode-2.polkadot.io/tcp/30334/ws/p2p/12D3KooWByVpK92hMi9CzTjyFg9cPHDU5ariTM3EPMq9vdh5S5Po",
+    "/dns/westend-bootnode-2.polkadot.io/tcp/443/wss/p2p/12D3KooWByVpK92hMi9CzTjyFg9cPHDU5ariTM3EPMq9vdh5S5Po",
+    "/dns/westend-bootnode-3.polkadot.io/tcp/30333/p2p/12D3KooWGi1tCpKXLMYED9y28QXLnwgD4neYb1Arqq4QpeV1Sv3K",
+    "/dns/westend-bootnode-3.polkadot.io/tcp/30334/ws/p2p/12D3KooWGi1tCpKXLMYED9y28QXLnwgD4neYb1Arqq4QpeV1Sv3K",
+    "/dns/westend-bootnode-3.polkadot.io/tcp/443/wss/p2p/12D3KooWGi1tCpKXLMYED9y28QXLnwgD4neYb1Arqq4QpeV1Sv3K",
     "/dns/boot.stake.plus/tcp/32333/p2p/12D3KooWK8fjVoSvMq5copQYMsdYreSGPGgcMbGMgbMDPfpf3sm7",
     "/dns/boot.stake.plus/tcp/32334/wss/p2p/12D3KooWK8fjVoSvMq5copQYMsdYreSGPGgcMbGMgbMDPfpf3sm7",
     "/dns/boot-node.helikon.io/tcp/7080/p2p/12D3KooWRFDPyT8vA8mLzh6dJoyujn4QNjeqi6Ch79eSMz9beKXC",