2.0/update errors

[blowmage]

• Update GaxError to Ruby 2.3
  • Remove Ruby 2.0 specific code since minimum Ruby is now 2.3.
  • Move GaxError#status_details to google/gax/grpc/status_details.rb file, so that the method is only loaded when GRPC is.

[codecov[bot]]

Codecov Report

Merging #183 into master will decrease coverage by 0.18%. The diff coverage is 96.73%.

@@            Coverage Diff             @@
##           master     #183      +/-   ##
==========================================
- Coverage      99%   98.81%   -0.19%     
==========================================
  Files          29       30       +1     
  Lines        1502     1523      +21     
==========================================
+ Hits         1487     1505      +18     
- Misses         15       18       +3

Impacted Files	Coverage Δ
lib/google/gax/grpc.rb	100% <100%> (ø)	:arrow_up:
test/google/gax/gax_error/status_details_test.rb	100% <100%> (ø)
lib/google/gax/api_call.rb	100% <100%> (ø)	:arrow_up:
test/google/gax/error_test.rb	100% <100%> (ø)	:arrow_up:
lib/google/gax/errors.rb	95.45% <66.66%> (-4.55%)	:arrow_down:
lib/google/gax/grpc/status_details.rb	95% <95%> (ø)

---

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 24b1332...2a3ec16. Read the comment docs.

[codecov-io]

Codecov Report

Merging #183 into master will decrease coverage by 0.18%. The diff coverage is 96.73%.

@@            Coverage Diff             @@
##           master     #183      +/-   ##
==========================================
- Coverage   98.99%   98.81%   -0.19%     
==========================================
  Files          30       31       +1     
  Lines        1496     1517      +21     
==========================================
+ Hits         1481     1499      +18     
- Misses         15       18       +3

Impacted Files	Coverage Δ
lib/google/gax/grpc.rb	100% <100%> (ø)	:arrow_up:
test/google/gax/gax_error/status_details_test.rb	100% <100%> (ø)
lib/google/gax/api_call.rb	100% <100%> (ø)	:arrow_up:
test/google/gax/error_test.rb	100% <100%> (ø)	:arrow_up:
lib/google/gax/errors.rb	95.45% <66.66%> (-4.55%)	:arrow_down:
lib/google/gax/grpc/status_details.rb	95% <95%> (ø)

---

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 31f95bf...1e07276. Read the comment docs.