Revert "Fix the floatingip pollster"

This reverts commit 8057b66c0b7ac87863f175d850414bc0ed260ab2.

This is spamming the nova-api logs in tempest runs.

Change-Id: Iafe20bbab45bff62470374eba2a6e0e4fa3be611
Closes-Bug: #1328694
Merge "Revert "Fix the floatingip pollster""
Implemented POC for central-agent parallel processing

 * Modified processing flow
 * Added implementation for mongodb

 blueprint central-agent-improvement