[CentOS] ALPN and Http/2, CentOS 7.4

Now that 7.4 CR has delivered OpenSSL 1.0.2, I should be able to serve
http/2 pages to Chrome, but I still see messages that ALPN is not enabled.

OpenSSL 1.0.2 is installed:

$ rpm -qa |grep openssl
openssl-libs-1.0.2k-8.el7.x86_64
openssl-1.0.2k-8.el7.x86_64


But https://tools.keycdn.com/http2-test says "www.stevenstern.me"
supports http 2 but ALPN is not supported.

Ideas?  Does anything need to be explicitly enabled for ALPN?  As I
mentioned, the http2 stuff seems to be working.


-- 
-- Steve