Add armhf Debian package to GitHub release

[hnw]

Add armhf(32bit ARM with hardfloat) Debian/Raspberry Pi OS package support.

The package has already been tested on my own Raspberry Pi Zero, and it works fine.

[lufia]

Hi @hnw

Thanks for your contribution! This changes is looks good.

We'd like to know where you need to publish this armhf package on:

1. GitHub Release
2. Official apt repository

Of course, the armhf package will be published on GitHub Release immediately after this p-r is merged and built whole the repository. However to publish it on official repository, we need to build mackerel-agent and plugins for armhf architecture, and to add more additional changes to internal codes for releasing.

Could are you satisfied if the armhf package of mkr is published GitHub Release?

[hnw]

I am intending "1", to publish on GitHub Realese.

As my understanding, the official apt repository provides official support packages by Hatena. And armhf architecture might be unofficial for business reason.

When I made a patch for armhf package of mackerel-agent (mackerelio/mackerel-agent#599), someone said it's difficult to include community packages into official repository. So, I suppose "2" is also hard for mkr.

[lufia]

Ok, I will merge this.

Again, thanks for your work.

[lufia]

Ah, sorry. I said "published on GitHub Release immediately after this p-r is merged and built whole the repository." but that is wrong. We will release new version of mkr in few days. Please wait a moment.