Revert "AMBARI-5161 Customize Services step load: change calls to asynchronous, second patch. (atkach)"

This reverts commit 55b5111afa79d2954b750e62f33a49eaa6ac627a.
Revert "AMBARI-5161 Customize Services step load: change calls to asynchronous. (atkach)"

This reverts commit b6b56cfeb600cd1be788245843f57ed2c6306072.