JBTM-1698. Make REST-AT 2PC response body optional
JBTM-1645. Disable tests based on PR's description
Merge branch 'master-JBTM-1698.Make_commit_response_body_optional' of https://github.com/Gytis/narayana into Gytis-master-JBTM-1698.Make_commit_response_body_optional
Merge branch 'master-JBTM-1645.Allow_PR_to_configure_some_parameters_in_narayana.sh' of git://github.com/Gytis/narayana into Gytis-master-JBTM-1645.Allow_PR_to_configure_some_parameters_in_narayana.sh
[JBTM-1459] parallel synchronizations
[JBTM-1459] Improved javadoc for async config options
https://issues.jboss.org/browse/JBTM-1907