Relax DirectMap regexp for /proc/meminfo
Relax DirectMap regexp for /proc/meminfo

Signed-off-by: Davide Cavalca <57b6bba554e5c9f62dbaf7411a445cfa402496c7@fb.com>

chef/ohai,higanworks/ohai,higanworks/ohai,jaymzh/ohai,mattray/ohai,jaymzh/ohai,chef/ohai,mattray/ohai