Build Updates

[rossmcdonald]

Some major changes to the build.py build script, including:

• breaking ARM platforms out as different architectures (fixes Build ARM pacakge (.deb / .rpm) #708)
• improves debug output
• removes pkgarch and goarm build arguments
• moves nightly versioning to use a <version>~n<epoch> over <version>.n<epoch>
• removes zip as a packaging target due to FPM's poor support of zip
• merges most changes from the InfluxDB and Kapacitor build scripts (more information here)
• added a permissions check to the post-install script (fixes "insecure permissions" error fron logrotate cron task #713)

[sparrc]

looks good, thanks @rossmcdonald,

Just one thing: I'd rather that the tests here and in the Makefile not diverge. Telegraf requires some docker containers for the tests to run so I'm pretty sure running the tests from build.py will fail. Could we remove the run_tests function from here, or have it just execute make test?

[rossmcdonald]

@sparrc Yes, absolutely. I left the tests function in this version since they are a part of the InfluxDB and Kapacitor build processes, but I can take them out if they're not useful to you.

I'm also going to be re-adding the zip package functionality that was removed. I didn't realize that had been modified to be a manual process (instead of using fpm), so I should have this ready by EOD today. I'll ping you once it's ready for merging.

[sparrc]

oh, sorry about that, I removed using fpm because it was creating zips with temp directories inside them that I couldn't figure out how to remove

[rossmcdonald]

No worries at all. I could never figure out how to fix the zip's from including the temp directories, so I just removed them from the InfluxDB and Kapacitor package targets to simplify things. I'll re-add that portion, though.

[rossmcdonald]

Added in another fix to the post-install script, removed the test functionality, and re-added the zip functionality, so this is ready to go.