Send test coverage for backend to codecov.io

[ryanhofdotgov]

No description provided.

[codecov]

Codecov Report

Merging #669 into develop will increase coverage by 0.05%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop     #669      +/-   ##
===========================================
+ Coverage    46.17%   46.23%   +0.05%     
===========================================
  Files          677      677              
  Lines        26877    26874       -3     
  Branches      3456     3456              
===========================================
+ Hits         12410    12424      +14     
+ Misses       14141    14125      -16     
+ Partials       326      325       -1

Flag	Coverage Δ
#backend	6.44% <ø> (?)
#frontend	90.79% <ø> (?)

Impacted Files	Coverage Δ
api/eqip/client.go	77.27% <0%> (-0.51%)	⬇️
api/http/save.go	0% <0%> (ø)	⬆️
api/http/root.go	85.89% <0%> (+19.23%)	⬆️

---

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 8dc9cde...c8fe322. Read the comment docs.

[ryanhofdotgov]

This ended up being more complicated than I thought:

• dep doesn't support pulling down non-Go dependencies:
  dep cannot vendor dependencies that do not have Go source code golang/dep#1306 (comment)
  (would have preferred to pull codecov down that way, similar to how we pull for JS container)
• codecov bash takes different options that codecov Node, can only specify one coverage file per run, if not using its search function. The codecov paradigm not really designed for multi-language project layout we have.
• codecov.io doesn't work well (% totals, file links to GitHub, etc.) if you are submitting reports for sub-directories of a project, it really wants the top-level view of the project).

Code coverage statistics are abysmal at 6% for the backend. There also does not seem to be a Go mechanism for reporting test coverage on the conditional blocks in the XML templates. Frontend remains at 90%.

[ryanhofdotgov]

Partially addresses #396