shim: Fix execution of cc-shim binary
shim: Fix execution of cc-shim binary

The use of exec.cmd was not proper, causing the binary to be
re-executed. Relying on the exec.Command() function allows to
start cc-shim without re-executing it.

Signed-off-by: Sebastien Boeuf <90b401417360b1924ef3f520ddee932686110f85@intel.com>

gorozco1/runtime,devimc/runtime,chavafg/runtime,chavafg/runtime,gorozco1/runtime,devimc/runtime,clearcontainers/runtime,clearcontainers/runtime