Initcontainer is now built in main build process, no need to download
anythin special.
Added note about checking OCI hooks configuration parameter in CRI-O
Fixes: #192
intel-fpga-initcontainer installs OPAE and OpenCL tools
into /opt/intel/fpga-sw directory.
Used fpgaconf-wrapper, aocl-wrapper and packager tools by
CRI hook to program OPAE and OpenCL bitstreams.
Added support for OpenCL bitstreams: the hook tries to find
either OPAE or OpenCL bitstream suitable for requested region
and AFU and programs it using OPAE or OpenCL tools.
Fixes#71
The hook gets FPGA_REGION and FPGA_BITSTREAM environment variables
defined in a pod spec, finds bitstream file, verifies it and programs
FPGA device with it using fpga-configure tool from OPAE.
