update non-regression.sh to verify all shec's optimized variants encode/decode
update non-regression.sh to verify all shec's optimized variants
encode/decode

This commit is an action item from request ceph#5246

Signed-off-by: Shotaro Kawaguchi <4a368e43a0255587c447b7a977fed7f09a7c48c8@jp.fujitsu.com>

ceph/ceph-erasure-code-corpus