Switch setup of ldapLinuxPlatformUtility to use environment variales

that are swapped out during deployment.  These are changed by defining
environment variables in dm.deploy.conf or in dm_dev.deploy.conf.
NOTE:  When working with a standalone developer instance you can replace
the ldapLinuxPlatformUtility with NoopPlatformUtility once it is
deployed.

etc/ds-web-service.conf.template

@@ -18,7 +18,7 @@ recycleDirectory=DM_STORAGE_DIR/recycle
 storageId=extrepid
 manageStoragePermissions=True
 #platformUtility=dm.common.utility.linuxUtility.LinuxUtility()
-platformUtility=dm.common.utility.ldapLinuxPlatformUtility.LdapLinuxPlatformUtility(LDAP_SERVER_URL, 'LDAP_UTIL_ADMIN_DN', 'LDAP_UTIL_ADMIN_PASSWD_FILE', groupDnFormat='LDAP_UTIL_GROUP_DN_FORMAT', minGidNumber=LDAP_UTIL_MIN_GID_NUMBER)
+platformUtility=dm.common.utility.ldapLinuxPlatformUtility.LdapLinuxPlatformUtility('LDAP_SERVER_URL', 'LDAP_UTIL_ADMIN_DN', 'LDAP_UTIL_ADMIN_PASSWD_FILE', groupDnFormat='LDAP_UTIL_GROUP_DN_FORMAT', minGidNumber=LDAP_UTIL_MIN_GID_NUMBER)
 
 [LdapLinuxPlatformUtility]
 refreshAuthFilesCommand=