[ci] Added Power Support ppc64le

[nagesh4193]

Added power support for the travis.yml file with ppc64le. This is part of the Ubuntu distribution for ppc64le. This helps us simplify testing later when distributions are re-building and re-releasing.

[nagesh4193]

@nemesisdesign Thank you for the info. Tagging @gerrith3.

[gerrith3]

@nemesisdesign I'm escalating your request to Travis - I'll let you know if I get a response soon. They were swamped, I know they are getting close to catching up but there's always a chance that a request got lost in the system.

[gerrith3]

BTW, @nemesisdesign did you file your request at support.travis-ci.com ?

[gerrith3]

BTW, Travis support confirmed that you should have another 10k credits for openwisp now - not sure if you can verify that?

[nemesifier]

Thanks @nagesh4193 and @gerrith3, I think I had filed it through their support page, I received the email confirmation from their zendesk notification system, but still haven't got a response so far.

It looks like we got 10K credits, but they're not flagged as OSS only and are not recurring, I hope they can help us to get some monthly allotment of OSS only credit, so we can avoid having to request credits periodically.

Anyway, I will now leave some feedback for this PR.

[gerrith3]

@nemesisdesign how many credits do you think you need, keep in mind that it is about 10 credits per minute of Linux run time? As an open source developer you should be able to get whatever you need at this point. Other CIs are limiting to 2k minutes or so but currently Travis only requires that you request what you need. Also, how many repositories are part of the openwisp environment and about how many developers? If we need to request more than we should do so. Keep in mind that I run the budget for the ppc64le back end servers, so the only cost that Travis worries about there is for the front end that is shared across all architectures. So, ppc64le back end servers is our gift to the open source communities. ;)

[nemesifier]

@nemesisdesign how many credits do you think you need, keep in mind that it is about 10 credits per minute of Linux run time? As an open source developer you should be able to get whatever you need at this point. Other CIs are limiting to 2k minutes or so but currently Travis only requires that you request what you need. Also, how many repositories are part of the openwisp environment and about how many developers? If we need to request more than we should do so.

At the moment I count 25 active repositories and 22 members of the organization.

Keep in mind that I run the budget for the ppc64le back end servers, so the only cost that Travis worries about there is for the front end that is shared across all architectures. So, ppc64le back end servers is our gift to the open source communities. ;)

@gerrith3 that's great, thank you so much for your support to OSS.

[nemesifier]

@nagesh4193 if you could rename the commit to [ci] Added Power Support ppc64le then we should see the travis build starting

[coveralls]

Coverage remained the same at 99.279% when pulling 963e59b5df5d51d9e0cd24adcbdde60d7c228fd9 on nagesh4193:master into a507e2da248d2dcd3e523d222226536789b8a9de on openwisp:master.

[nagesh4193]

@nemesisdesign I have updated the commit to the new name as requested. Thank you.

[gerrith3]

@nemesisdesign we took these projects as already being part of the ppc64le distros from debian/ubuntu. So this doesn't represent a specific user or use case, but the simple fact that this is viewed as a base/common package for Linux at this point and we enable all of these packages for Power. Our goal is to hit full parity with Intel in terms of application availability. I can't name a specific django/openwisp user, but usually ubuntu includes packages like this because they believe that they are the future or at least modern software and we piggy back on that decision. I know that's probably not an insightful "who are my users" answer that you are looking for but that's how we got here.