Tests: skip ssl_sni_protocols.t with Net::SSLeay lacking TLSv1.3.

It may be missing in the underlying Library, seen on Amazon Linux LTS
with Net:SSLeay linked to OpenSSL 1.0.2.

Author: pluknet

ssl_sni_protocols.t

@@ -22,9 +22,12 @@ use Test::Nginx;
 select STDERR; $| = 1;
 select STDOUT; $| = 1;
 
-my $t = Test::Nginx->new()->has(qw/http http_ssl openssl:1.1.1 socket_ssl_sni/)
-	->has_daemon('openssl')->plan(4)
-	->write_file_expand('nginx.conf', <<'EOF');
+my $t = Test::Nginx->new()->has(qw/http http_ssl openssl:1.1.1 socket_ssl_sni/);
+
+eval { defined &Net::SSLeay::CTX_set_ciphersuites or die; };
+plan(skip_all => 'Net::SSLeay too old') if $@;
+
+$t->has_daemon('openssl')->plan(4)->write_file_expand('nginx.conf', <<'EOF');
 
 %%TEST_GLOBALS%%
 

stream_ssl_sni_protocols.t

@@ -23,9 +23,12 @@ select STDERR; $| = 1;
 select STDOUT; $| = 1;
 
 my $t = Test::Nginx->new()
-	->has(qw/stream stream_ssl stream_return openssl:1.1.1 socket_ssl_sni/)
-	->has_daemon('openssl')->plan(4)
-	->write_file_expand('nginx.conf', <<'EOF');
+	->has(qw/stream stream_ssl stream_return openssl:1.1.1 socket_ssl_sni/);
+
+eval { defined &Net::SSLeay::CTX_set_ciphersuites or die; };
+plan(skip_all => 'Net::SSLeay too old') if $@;
+
+$t->has_daemon('openssl')->plan(4)->write_file_expand('nginx.conf', <<'EOF');
 
 %%TEST_GLOBALS%%