doc: README: add useful ldap commands
doc: README: add useful ldap commands

Change-Id: Ibf5b4714a4ba43c1f5ab45280c1208bd4d335d55
Signed-off-by: Alon Bar-Lev <2e3ceb4d37adc6ae3ccc00d3646e0e0a036ace03@redhat.com>

alonbl/ovirt-engine-extension-aaa-ldap,oVirt/ovirt-engine-extension-aaa-ldap,alonbl/ovirt-engine-extension-aaa-ldap,oVirt/ovirt-engine-extension-aaa-ldap,oVirt/ovirt-engine-extension-aaa-ldap,alonbl/ovirt-engine-extension-aaa-ldap