chore(core-p2p): add 3.0.0 alpha channel to valid peer versions

[air1one]

Summary

Checklist

• Documentation (if necessary)
• Tests (if necessary)
• Ready to be merged

[codecov]

Codecov Report

Merging #3924 into develop will decrease coverage by 1.76%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #3924      +/-   ##
===========================================
- Coverage    97.56%   95.80%   -1.77%     
===========================================
  Files          629      629              
  Lines        14535    14535              
  Branches      1728     1728              
===========================================
- Hits         14181    13925     -256     
- Misses         165      421     +256     
  Partials       189      189              

Flag	Coverage Δ
#functional	?
#integration	9.83% <ø> (ø)
#unit	95.74% <ø> (ø)

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Impacted Files	Coverage Δ
...rc/migrations/20190307000000-drop-wallets-table.ts	0.00% <0.00%> (-100.00%)	⬇️
...c/migrations/20180305200000-create-rounds-table.ts	0.00% <0.00%> (-100.00%)	⬇️
...c/migrations/20180305300000-create-blocks-table.ts	0.00% <0.00%> (-100.00%)	⬇️
.../migrations/20180305100000-create-wallets-table.ts	0.00% <0.00%> (-100.00%)	⬇️
...igrations/20190626000000-enforce-chained-blocks.ts	0.00% <0.00%> (-100.00%)	⬇️
...rations/20191003000000-migrate-vendor-field-hex.ts	0.00% <0.00%> (-100.00%)	⬇️
...ations/20180305400000-create-transactions-table.ts	0.00% <0.00%> (-100.00%)	⬇️
.../20190718000000-check_previous_block-add-schema.ts	0.00% <0.00%> (-100.00%)	⬇️
...20190619000000-drop-id-column-from-rounds-table.ts	0.00% <0.00%> (-100.00%)	⬇️
...81204200000-add-timestamp-index-to-blocks-table.ts	0.00% <0.00%> (-100.00%)	⬇️
... and 21 more

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