feat: do not connect to v1 peers

[darrenvechain]

Description

Prevent connecting to v1 nodes

TODO: Test peer cache

Type of change

• [x] New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• [x] comm/communicator_test.go
• [x] - Manually running:

  ./bin/thor --network main --allowed-peers=enode://ba4c84f7804d477feca2ba0ae5924cbefe529284457aaf3239a9ac5b5d96752c47e6d71e1088acbb02c74c0210265246528144c6e3aaebe9a3887c85b85b98c0@18.167.12.43:11235,enode://09e158ca5f30ca5b191c3c33ba4dd169908f2a38647c4842a3d8ff3e011ea09fa3f0f2a7e73734c7b5ed841579192ebafcd5cd600dc3b9822af150c5d114f90a@152.32.156.92:11235

:point_up: 1 good node, 1 old node

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] New and existing E2E tests pass locally with my changes
• [x] Any dependent changes have been merged and published in downstream modules
• [x] I have not added any vulnerable dependencies to my code

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 37.50000% with 10 lines in your changes missing coverage. Please review.

Project coverage is 62.68%. Comparing base (43d1fde) to head (c297567).

Files	Patch %	Lines
p2psrv/server.go	37.50%	10 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #767 +/- ## ========================================== + Coverage 62.57% 62.68% +0.11% ========================================== Files 199 199 Lines 18098 18113 +15 ========================================== + Hits 11324 11355 +31 + Misses 5691 5673 -18 - Partials 1083 1085 +2 ```

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