app/test-acl: add ability to manually select RT method
app/test-acl: add ability to manually select RT method

In test-acl replace command-line option "--scalar" with new one:
"--alg=scalar|sse|avx2".
Allows user manually select preferred classify() method.

Signed-off-by: Konstantin Ananyev <cbd5212b59ab42a210d72992d23a3aa17cfd3eaf@intel.com>
Acked-by: Neil Horman <3316dc2d77df57653443c0391a5296176d6ca9c3@tuxdriver.com>

phermansson/dpdk,phermansson/dpdk,phermansson/dpdk,phermansson/dpdk