Orb exits 1 without any debugging information

[josegonzalez]

Can we have a debug variable that sets set -x if it's available? It isn't super clear what the error is based on the output here...

My config:

- coveralls/upload:
          coverage_file: << parameters.working_directory >>/lcov.info
          coverage_format: lcov

[afinetooth]

@josegonzalez in #48 (orb v2.2.4) we have added a debug parameter to the coveralls/upload command that replaces verbose (deprecated) and does two (2) things:

1. Enables set -x debugging throughout entire script including setup steps like downloading, verifying and calling the binary; and
2. Adds the --debug flag to all coveralls commands to enable verbose output from the Coveralls API.

[josegonzalez]

Thanks!