The pair wise testing for MSB will be covered by other projects.
Explain
MSB mainly provides service registration and gateway functions. Other components need to rely on MSB to work properly. If MSB is not normal, other components will also fail.
Example
For example, in the use case of holmes, the MSB is covered with
CODE refer: https://gerrit.onap.org/r/gitweb?p=testsuite.git;a=blob;f=robot/resources/holmes_interface.robot;h=6d30aa04b2eb66efc52f4d0c81574135cf89083d;hb=refs/heads/master
RESULT refer: https://logs.onap.org/onap-integration/daily/onap_daily_pod4_master/2022-05/16_02-48/xtesting-healthcheck/full/full/report.html#tags?health-holmes
