Ensure pstore has data before running CtsKernelConfigTestCases.

Upon first boot it is possible that a device has nothing in its pstore.
We now inject messages in the pstore and reboot before running the test.

Bug: b/37627779
Test:  run cts -m CtsKernelConfigTestCases
Change-Id: I2ac1c2ce331054b408cb79136e076f31061d5a9a
1 file changed