trailing UTF-16 bytes are not removed when extracting the commands from ccel eventlog

[jerryrhyu]

go-eventlog/extract/rtmr.go

Line 70 in f8fec0e

commands = append(commands, string(rawData))

the commands extracted from CCEL is trailed with '\u0000'
"grub_cmd: gptpriority hd0 2 prioA\u0000",
"grub_cmd: gptpriority hd0 4 prioB\u0000",
"kernel_cmdline: /syslinux/vmlinuz.... \u0000'

[alexmwu]

We try to extract exactly what we see in the event log. We have a normalize string function applied to the commands/kernel command line where we just
return strings.Trim(s, "\x00\t\n\v\f\r ")