Filter out fetching resources output from terraform commands

[levkk]

Attempt at fixing #1306

Might not be the right place for this logic; first time committer, please let me know if there is a better place to do this

[codecov]

Codecov Report

Merging #1320 (8e17fac) into master (d09e798) will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1320      +/-   ##
==========================================
+ Coverage   70.05%   70.09%   +0.04%     
==========================================
  Files          74       74              
  Lines        5540     5548       +8     
==========================================
+ Hits         3881     3889       +8     
  Misses       1303     1303              
  Partials      356      356              

Impacted Files	Coverage Δ
server/events/terraform/terraform_client.go	78.89% <100.00%> (+0.88%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d09e798...8e17fac. Read the comment docs.

[acastle]

Hi @levkk, thank you for the contribution!

There is a lot of interest in changing the message formatting behavior at the moment, in particular the following PRs:
#1315
#1309

Unfortunately, either of these approaches will dramatically change how this particular feature should be implemented. It feels like the best course of action would be to hold off on making additional changes to this particular area for the time being. At least until there is a clear direction on a more flexible way of handling the outputs from terraform.

[levkk]

@acastle Hello! Sounds good, thank you. Happy to rewrite this when the dust settles.

[lkysow]

I think we could put this logic into https://github.com/runatlantis/atlantis/blob/master/server/events/runtime/plan_step_runner.go#L231. This handles the old format of refreshing...