[Skiboot] op-test-framework v0.6 released

[Stewart Smith]

https://github.com/open-power/op-test-framework/
and
https://github.com/open-power/op-test-framework/releases/tag/v0.6

Release notes below:

Improvements to test runner:

- Save the test execution logs in test-reports directory

Changes to machine state machine:

- Update state machine for ssh connection when system goes to off.
- Fix broken state machine for PETITBOOT_SHELL

New/improved tests:

- TOD Corruption tests.
- Enhancements for frozen PE tests.
- Enhance EM tests to run in skiroot.
- OPAL Utils testcase.
- Enhance RTC driver test to work in skiroot.
- Enhance inband ipmi to work in skiroot.
- Add surv ack timeout HIR.
- Enhance system dump testcase.
- test if the opal-prd daemon is always running
- PRD: Abstract SCOMS for P9
- FWTS: fail properly when FWTS not installed

-- 
Stewart Smith
OPAL Architect, IBM.