New option --extract-hyperkube to declare the way how hyperkube
will be delivered.
By default this option is disabled which means hyperkube should be
extracted before running promenade container for the first time.
When it's enabled the appropriate env vars should be set for
promenade container to be able to extract hyperkube binary from image.
Change-Id: I2c45100e1e953d859d768ec80f268bd490ce3a81
886007b36e