Recovery dc tests were replaced with new version and some small changes:

* address family now passes explicitly
* test tags were corrected for recovery merge tests
* recovery merge tests were moved
(to prepare them for changes for recovery tests)
* a delay before running `dnet_recovery` was added
(for indexes synchronization)
* option name was corrected
fix: wrong type casting was corrected
Merge pull request #33 from features/replace-recovery-dc-tests

Recovery dc tests were replaced with new version and some small changes: