.......... [ZBX-8773] updated ChangeLog for 2.2.7rc1

git-svn-id: svn://svn.zabbix.com/trunk@49267 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2
........S. [ZBX-8514] fixed bug where server would turn a passive proxy into a host if the proxy machine is running an agent that is discovered via network discovery

git-svn-id: svn://svn.zabbix.com/trunk@49270 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2