README: add URLs for openldap installation

Reported-by: Michael Paquier
Discussion: https://postgr.es/m/20180521013425.GA4476@paquier.xyz

Backpatch-through: head

diff --git a/src/test/ldap/README b/src/test/ldap/README
index 61578385c5fd18646954437583faec5d67713051..3e4c5cbaf95f2bf8c6bad3eb1e164b80c738a72c 100644 (file)
--- a/src/test/ldap/README
+++ b/src/test/ldap/README
@@ -22,3 +22,14 @@ Running the tests
 or
 
     make installcheck
+
+Requirements
+============
+
+LDAP server and client tools are required.
+
+Debian/Ubuntu packages: slapd ldap-utils
+
+RHEL/CentOS packages: openldap openldap-clients openldap-servers
+
+FreeBSD: openldap24-server openldap24-client