FreeSWITCH-FS-7447

Merge pull request #231 in FS/freeswitch from ~SEKIL/freeswitch-7412:master to master

* commit 'f5e0a879b2c5e035075db2c9441a111020575dea':
  JIRA FS-7412. Added new LDAP schema (fsaccount.schema) with relevant attributes to match FS directory params and variables. Changed mod_xml_ldap code to reflect new schema. Updated xml_ldap.conf.xml as well to reflect mapping of new attributes.