hostman: use "uname -m" for for fetch processor type

"uname -p" command from native busybox, coreutils may return "unknown".
CentOS coreutils has a patch fallback to using uts.machine if sysinfo
syscall is not available

Use "uname -m" for maximum compatibility

pkg/hostman/hostinfo/hostinfohelper.go

@@ -95,7 +95,7 @@ func DetectCpuInfo() (*SCPUInfo, error) {
 	if err != nil {
 		return nil, errors.Wrap(err, "parse dmi cpuinfo")
 	}
-	cpuArch, err := procutils.NewCommand("uname", "-p").Output()
+	cpuArch, err := procutils.NewCommand("uname", "-m").Output()
 	if err != nil {
 		return nil, errors.Wrap(err, "get cpu architecture")
 	}