actions: Upload test results to opensearch service

On push, upload test results to opensearch for analysis and reporting.
Goal is to use this data to understand test coverage better and use this
services for all test reporting, also for results coming from testing on
hardware.
Opensearch is currenly being used for evaluation, we are considering
the switch to elasticsearch later.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>