Lower the libc needed for riklet usage

[alexandrebrg]

What needs to be done

We can either lower the libc version needed in order to run riklet (might collapse with some package requirements), or we can use musl build in order to provide static binding to kernels.

Why it needs to be done

We currently have issues where the riklet build is needing a libc version that is higher than most distributions provide (1.34+).