- enable only the arch-es that we know are supported (x86_64 and Arm64)
- build fails with old versions of cargo. Set a minimum version
- fixup the obscpio files for 0.1.7
- Update to version 0.1.7:
* libkrun: Bump version to 0.1.7
* devices/fs: fix listxattr on macOS
* libkrun: Bump version to 0.1.6
* vmm: Add "no-kvmapf" to the kernel command line
* libkrun: Bump version to 0.1.5
* libkrun: Put env vars values between quotes
* init: Fix format warning in printf()
* init: Compile with -Wall
* Makefile: Have init.c as a prerequisite of init
* init: Fix the perror() messages
- there's no libkrunfw for i586 so exclude it here as well