Tests: wait for docker services

* Wait for services to be up before running tests. This is important, especially for OpenSearch
* Generally depends on the CPU power of the hosting machine, thus this is an extra protective measure

run-tests.sh

@@ -40,7 +40,7 @@ if [[ ${keep_services} -eq 0 ]]; then
 fi
 
 export LC_TIME=en_US.UTF-8
-eval "$(docker-services-cli up --db "${DB:-postgresql}" --search "${SEARCH:-opensearch}" --mq "${MQ:-rabbitmq}" --cache "${CACHE:-redis}" --env)"
+eval "$(docker-services-cli up --db "${DB:-postgresql}" --search "${SEARCH:-opensearch}" --mq "${MQ:-rabbitmq}" --cache "${CACHE:-redis}" --env --no-wait)"
 
 # Note: expansion of pytest_args looks like below to not cause an unbound
 # variable error when 1) "nounset" and 2) the array is empty.