haproxy; don't use '*' in the filename for wildcard domain

By default acme.sh uses the '*' character in the filename for wildcard.
That can be confusing within HAProxy since the * character in front of a
filename in the stat socket is used to specified an uncommitted
transaction.

This patch replace the '*' by a '_' in the filename.
This is only done when using the default filename, the name can still be
forced with an asterisk.

deploy/haproxy.sh

@@ -102,6 +102,11 @@ haproxy_deploy() {
     _savedomainconf Le_Deploy_haproxy_pem_name "${Le_Deploy_haproxy_pem_name}"
   elif [ -z "${Le_Deploy_haproxy_pem_name}" ]; then
     Le_Deploy_haproxy_pem_name="${DEPLOY_HAPROXY_PEM_NAME_DEFAULT}"
+    # We better not have '*' as the first character
+    if [ "${Le_Deploy_haproxy_pem_name%%"${Le_Deploy_haproxy_pem_name#?}"}" = '*' ]; then
+      # removes the first characters and add a _ instead
+      Le_Deploy_haproxy_pem_name="_${Le_Deploy_haproxy_pem_name#?}"
+    fi
   fi
 
   # BUNDLE is optional. If not provided then assume "${DEPLOY_HAPROXY_BUNDLE_DEFAULT}"