Prompt user to reenter credentials when create napps upload fails and KeyboardInterrupt handled on create_napp()

[slinksoft]

The Capstone 1 team at FIU attempted to solve issue #222 . We added if statements to check for a specific 401 UNAUTHORIZED error that involved an invalid/expired token.

We also attempted to solve issue #212 , which simply was solved by catching a KeyboardInterrupt exception on create_napp()

[hdiogenes]

There's some weird behavior going on in Travis for this pull request, where it logs the result as "Build passed" even when some tests fail in the detailed build log: https://travis-ci.org/github/kytos/kytos-utils/builds/704405595

[hdiogenes]

@slinksoft the tests are failing for this PR. Can you please run the tests with tox and try to fix them?

[slinksoft]

Hello @hdiogenes . I apologize for just seeing this, as I was busy with other projects before our team's semester started.

I think as we did with our previous pull requests (mainly the ones in the kytos repo), we are going to start over with these two issues on kytos-utils, and solve each one separately so debugging is easier. Some of the errors being shown are confusing.

I'll let my team know and close this PR until we are ready to submit the fixes. Thanks,