don't fail if we can't set terminal to RAW mode

[rberrelleza]

In my tests, not being able to enable RAW mode only had one side-effect, the terminal will echo every command (ugly, but not end of the world).

I think it's better to not fail the command, even if we offer a degraded experience. On the side, I'm doing some testing to try and figure out the root cause of #876

Proposed changes

• Log the error that comes from terminal.Raw and keep going
• Get the terminal size, and fallback on a default on error

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

[codecov]

Codecov Report

Merging #877 into master will decrease coverage by 0.09%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #877      +/-   ##
==========================================
- Coverage   33.41%   33.32%   -0.10%     
==========================================
  Files          67       67              
  Lines        5291     5306      +15     
==========================================
  Hits         1768     1768              
- Misses       3375     3390      +15     
  Partials      148      148              

Impacted Files	Coverage Δ
pkg/ssh/exec.go	0.00% <0.00%> (ø)

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