OstroTestExecution.rst: Document about how to run auto and manual test cases in this project.
OstroTestExecution.rst: Document about how to run auto and manual test cases in this project.

How to document about test environment set up and test execution.

Signed-off-by: Shen, Cathy <5546656df0579b1efbd34a8f27ff3d0a4b1e0895@intel.com>

ostroproject/meta-iotqa,ostroproject/meta-iotqa,ostroproject/meta-iotqa,ostroproject/meta-iotqa,ostroproject/meta-iotqa