Fix http/2 support for internal endpoints

Followup on I2e00d3e9193a3052d43a228915ea249794490afe.
Fixes an issue with wrong copy/paste.

Related-Bug: #1850924
Signed-off-by: Maksim Malchuk <maksim.malchuk@gmail.com>
Change-Id: I979a4e5b534f105a2e81f88f9675feddc883490a

ansible/roles/haproxy-config/templates/haproxy_single_service_split.cfg.j2

@@ -2,7 +2,7 @@
 {%- set external_tls_bind_info = 'ssl crt /etc/haproxy/haproxy.pem' if kolla_enable_tls_external|bool else '' %}
 {%- set external_tls_bind_info = "%s %s" % (external_tls_bind_info, haproxy_http2_protocol) if kolla_enable_tls_external|bool and haproxy_enable_http2|bool else external_tls_bind_info %}
 {%- set internal_tls_bind_info = 'ssl crt /etc/haproxy/haproxy-internal.pem' if kolla_enable_tls_internal|bool else '' %}
-{%- set internal_tls_bind_info = "%s %s" % (internal_tls_bind_info, haproxy_http2_protocol) if kolla_enable_tls_internal|bool and haproxy_enable_http2|bool else external_tls_bind_info %}
+{%- set internal_tls_bind_info = "%s %s" % (internal_tls_bind_info, haproxy_http2_protocol) if kolla_enable_tls_internal|bool and haproxy_enable_http2|bool else internal_tls_bind_info %}
 
 {%- macro userlist_macro(service_name, auth_user, auth_pass) %}
 userlist {{ service_name }}-user