fix: add x-forwarded-port and x-forwarded-proto to proxyHeaderIgnore defaults

[bblanchon]

As discussed in #462, ignoring X-Forwarded-Host implies ignoring X-Forwarded-Port and X-Forwarded-Proto as well.

[codecov]

Codecov Report

Merging #465 (3a5cacb) into master (c6e256c) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #465   +/-   ##
=======================================
  Coverage   95.55%   95.55%           
=======================================
  Files           1        1           
  Lines          45       45           
  Branches       25       25           
=======================================
  Hits           43       43           
  Misses          2        2           

Impacted Files	Coverage Δ
lib/module.js	95.55% <ø> (ø)

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[pi0]

LGTM. Thanks!