Enable arm64 builds for Linux

[praveenkumar]

We should build and release arm64 bits for linux as well so that user who want to try arm64 crc linux binary should able to use it.

[cfergeau]

I'd make 2 changes to the spec file

• change

  admin-helper/crc-admin-helper.spec.in

  Line 55 in 957c278

  install -m 0755 -vp %{gobuilddir}/src/%{goipath}/out/linux-amd64/crc-admin-helper %{buildroot}%{_bindir}/

  so that we always copy a native binary to /usr/bin regardless of the arch (ie build it with go build without forcing GOARCH). This way our ppc64/... packages would also work
• add an arm64 binary to the /usr/share/crc-admin-helper/redistributable/linux directory. It will be useful at release time to provide an official arm64 binary (

  admin-helper/crc-admin-helper.spec.in

  Lines 57 to 60 in 957c278

  	install -d %{buildroot}%{_datadir}/%{name}-redistributable/{linux,macos,windows}
  	install -m 0755 -vp %{gobuilddir}/src/%{goipath}/out/linux-amd64/crc-admin-helper %{buildroot}%{_datadir}/%{name}-redistributable/linux/
  	install -m 0755 -vp %{gobuilddir}/src/%{goipath}/out/windows-amd64/crc-admin-helper.exe %{buildroot}%{_datadir}/%{name}-redistributable/windows/
  	install -m 0755 -vp %{gobuilddir}/src/%{goipath}/out/macos-universal/crc-admin-helper %{buildroot}%{_datadir}/%{name}-redistributable/macos/

  )

[cfergeau]

Fixed in #59