apache: Make SSLProxyVerifyDepth configurable

apache/manifests/init.pp

@@ -501,6 +501,7 @@ class apache::sslproxy(
   $ssl_key="${::puppet_ssldir}/private_keys/${::homename}.pem",
   $ssl_cert="${::puppet_ssldir}/certs/${::homename}.pem",
   $ssl_ca="${::puppet_ssldir}/certs/ca.pem",
+  $ssl_verifydepth="1",
 ) {
 
   include ssl

apache/templates/sslproxy.conf.erb

@@ -2,3 +2,4 @@ SSLProxyEngine on
 SSLProxyMachineCertificateFile <%= @ssl_bundle %>
 SSLProxyCACertificateFile <%= @ssl_ca %>
 SSLProxyVerify require
+SSLProxyVerifyDepth <%= @ssl_verifydepth %>