Exit with exitCode:1 if a plugin could not be restored from config.xml

[purplecabbage]

Platforms affected

lib

What does this PR do?

see description

What testing has been done on this change?

manual testing

Checklist

• Reported an issue in the JIRA database
• Commit message follows the format: "CB-3232: (android) Fix bug with resolving file paths", where CB-xxxx is the JIRA ID & "android" is the platform affected.
• Added automated test coverage as appropriate for this change.

[codecov-io]

Codecov Report

Merging #541 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #541      +/-   ##
==========================================
+ Coverage   82.42%   82.42%   +<.01%     
==========================================
  Files          68       68              
  Lines        5462     5463       +1     
  Branches     1072     1072              
==========================================
+ Hits         4502     4503       +1     
  Misses        960      960

Impacted Files	Coverage Δ
cordova-lib/src/cordova/restore-util.js	95.81% <100%> (+0.01%)	⬆️

---

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 0d637f2...540bcb9. Read the comment docs.