Refetch on CORS error with cache:'reload'

[cmdcolin]

Possible fix to #72

Example file that produces a CORS error

http://giab.s3.amazonaws.com/data/AshkenazimTrio/HG003_NA24149_father/NIST_Stanford_Illumina_6kb_matepair/bams/HG003.mate_pair.bam

It is not fixed by refetching in this case (if we made an automatic cors-proxy that might be an option) but it does console.warn to indicate that it is refetching

[codecov]

Codecov Report

Merging #74 (4251213) into master (2492e27) will decrease coverage by 3.04%.
The diff coverage is 68.75%.

@@            Coverage Diff             @@
##           master      #74      +/-   ##
==========================================
- Coverage   86.95%   83.90%   -3.05%     
==========================================
  Files           4        4              
  Lines         161      174      +13     
  Branches       54       57       +3     
==========================================
+ Hits          140      146       +6     
- Misses         21       28       +7     

Impacted Files	Coverage Δ
src/remoteFile.ts	82.22% <68.75%> (-6.09%)	⬇️

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[cmdcolin]

Note also the usage of manually testing against the error message, this is really the only cue that is available to do a refetch (there is no status 0 or anything on the error object)

[cmdcolin]

@rbuels let me know what you think

I am unable to reliably reproduce the issue that is related to this, so not really able to test realistically