MT#54753 Add libldap-common to ngcp-services-pro

This packages provides /etc/ldap/ldap.conf and ldap.conf(5), for clients
using the LDAP library. This is a Recommends from the libldap shared
library, and as such we do not automatically get it installed as we have
installation of Recommends disabled by default.

Change-Id: I32866046289a4dce3eb0911140adb03a5fa2fd03

debian/control

@@ -310,6 +310,7 @@ Depends:
  ldap-utils,
  libavcodec-extra,
  libconfig-inifiles-perl,
+ libldap-common,
  liblz4-tool,
  libnss-sss,
  libpam-sss,