Use a different OpenLDAP docker image for testing

because openshift/openldap-2441-centos7 reports 404

Author: atodorov

docker-compose.testing

@@ -3,11 +3,16 @@ version: '2'
 services:
     openldap_server:
         container_name: openldap_server
-        image: openshift/openldap-2441-centos7
+        image: bitnami/openldap
         restart: always
         ports:
             - 389:389
-            - 636:636
+        environment:
+            - LDAP_PORT_NUMBER=389
+            - LDAP_ADMIN_USERNAME=Manager
+            - LDAP_ADMIN_PASSWORD=admin
+            - LDAP_ROOT=dc=example,dc=com
+            - LDAP_USER_DC=People
 
     db:
         container_name: db

testing/ldap.ldif

@@ -1,6 +1,7 @@
-dn: ou=People,dc=example,dc=com
-ou: People
-objectClass: organizationalUnit
+# b/c will be created when OpenLDAP initializes
+# dn: ou=People,dc=example,dc=com
+# ou: People
+# objectClass: organizationalUnit
 
 dn: uid=ldap_atodorov,ou=People,dc=example,dc=com
 cn: ldap_atodorov