fail early if requirements are not fulfilled

[rberrelleza]

Proposed changes

• fail the up cycle earlier if a requirement is not fulfilled
• improve error messages

Signed-off-by: Ramiro Berrelleza rberrelleza@gmail.com

[codecov]

Codecov Report

Merging #896 into master will increase coverage by 0.01%.
The diff coverage is 8.00%.

@@            Coverage Diff             @@
##           master     #896      +/-   ##
==========================================
+ Coverage   33.48%   33.49%   +0.01%     
==========================================
  Files          67       67              
  Lines        5337     5335       -2     
==========================================
  Hits         1787     1787              
+ Misses       3404     3402       -2     
  Partials      146      146              

Impacted Files	Coverage Δ
cmd/up.go	6.30% <0.00%> (+0.02%)	⬆️
pkg/ssh/manager.go	67.39% <ø> (ø)
pkg/model/dev.go	65.18% <100.00%> (ø)
pkg/okteto/client.go	42.68% <100.00%> (ø)

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[derek]

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