Test harness fixes
Pre-release
Pre-release
move TLS test from aws-c-http -> aws-c-io (#141) * move TLS test from aws-c-http to aws-c-io * minor touchups to tls/socket shutdown logic
move TLS test from aws-c-http -> aws-c-io (#141) * move TLS test from aws-c-http to aws-c-io * minor touchups to tls/socket shutdown logic