Show more detailed error when unknown Project

[tejal29]

Fixes #5214

I could not reproduce the original issue since there were no debug or trace logs.

In this PR

1. Log the original error seen
2. Return more text from actual error so that users can get more context on what went wrong.

[codecov]

Codecov Report

Merging #5939 (1aa3ac1) into master (aa9b115) will increase coverage by 0.01%.
The diff coverage is 90.00%.

@@            Coverage Diff             @@
##           master    #5939      +/-   ##
==========================================
+ Coverage   70.66%   70.67%   +0.01%     
==========================================
  Files         454      454              
  Lines       17399    17404       +5     
==========================================
+ Hits        12295    12301       +6     
  Misses       4196     4196              
+ Partials      908      907       -1     

Impacted Files	Coverage Δ
pkg/skaffold/build/build_problems.go	93.44% <90.00%> (-1.21%)	⬇️
pkg/skaffold/docker/parse.go	87.14% <0.00%> (+0.95%)	⬆️

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[aaron-prindle]

Seems there is schema error, doesn't seem to be a flake from first glance. From Travis logs:

FATA[0000] failed running [/usr/bin/git diff --name-only origin/master -- pkg/skaffold/schema]: running [/usr/bin/git diff --name-only origin/master -- pkg/skaffold/schema]
 - stdout: ""
 - stderr: "fatal: bad revision 'origin/master'\n"
 - cause: exit status 128 
exit status 1
FAILED hack/check-schema-changes.sh

[aaron-prindle]

LGTM, travis is failing currently but not sure how it is related to the code changes here

[tejal29]

LGTM, travis is failing currently but not sure how it is related to the code changes here

yeah. I accidently created a Pr from remote instead of my fork.