Print program ID when the verbose option is enabled.
Print program ID when the verbose option is enabled.

This allows operators to use other tools, like bpftool, to
introspect a running program.

Signed-off-by: David Calavera <b9b0c8e7f90ecf337f6797c4d2e0f1dd0dbc0324@gmail.com>

iovisor/bpftrace,iovisor/bpftrace,iovisor/bpftrace,iovisor/bpftrace