Fix DPDK huge page sharing between primary and secondary process

Fix DPDK huge page sharing

Use DPDK, running primary process on the host and secondary process in docker. Following error would occur:
EAL: Cannot mmap device resource file /sys/bus/pci/devices/0000:02:00.0/resource3 to address: 0x7ffff7feb000


CAUSE:  if addr is given when using mmap(), it’s just a hint, but not a must.
FIX:
In file: lib/librte_eal/common/eal_common_pci_uio.c
Add flag MAP_FIXED when calling mmap() in pci_map_resource(), that means:
 
78                         void *mapaddr = pci_map_resource(uio_res->maps[i].addr,
79                                         fd, (off_t)uio_res->maps[i].offset,
80                                         (size_t)uio_res->maps[i].size, MAP_FIXED);