HTTP proxy support

[loafoe]

• Supports HTTP proxies in front of Bastion/Proxy servers
• Makes this work behind corporate proxies

[codecov-io]

Codecov Report

Merging #63 (e389293) into master (355f45a) will decrease coverage by 24.22%.
The diff coverage is 7.69%.

@@             Coverage Diff             @@
##           master      #63       +/-   ##
===========================================
- Coverage   83.55%   59.32%   -24.23%     
===========================================
  Files           1        2        +1     
  Lines         225      327      +102     
===========================================
+ Hits          188      194        +6     
- Misses         21      114       +93     
- Partials       16       19        +3     

Impacted Files	Coverage Δ
http_proxy.go	0.00% <0.00%> (ø)
easyssh.go	71.32% <16.32%> (-12.24%)	⬇️

---

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[loafoe]

I wanted to rename the Proxy field to Bastion but this will break compatibility. I hope to improve coverage as well.

[appleboy]

I will take look at it. Can you resolve the conflicts?

[loafoe]

Yep, will look into resolving conflicts shortly

[codecov-commenter]

Codecov Report

❌ Patch coverage is 7.69231% with 96 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.32%. Comparing base (e954c88) to head (58f279c).
⚠️ Report is 61 commits behind head on master.

Files with missing lines	Patch %	Lines
http_proxy.go	0.00%	55 Missing ⚠️
easyssh.go	16.32%	38 Missing and 3 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           master      #63       +/-   ##
===========================================
- Coverage   83.55%   59.32%   -24.23%     
===========================================
  Files           1        2        +1     
  Lines         225      327      +102     
===========================================
+ Hits          188      194        +6     
- Misses         21      114       +93     
- Partials       16       19        +3     

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