tree e2d26af132672054f301012e82b42686894121bb
parent 2e0e2de5281252e410782d39d6d680f0519b6e6c
author Lei YU <mine260309@gmail.com> 1569577926 +0800
committer Lei YU <mine260309@gmail.com> 1572319441 +0800

Scan directories that store PSU images on start

When the service starts, scan the directories that store PSU images,
including the built-in images, and the saved images during PSU update.

When the scanned image is different than the running images, create
activation/version object;
When the scanned image is the same as the running images, update the
version object's path to indicate the PSU image path, so it could be
used for future update in case a PSU is replaced with a different
software.

Tested: On Witherspoon, fake create a dummy PSU image with a different
        version than running PSU, verify a new object is created on
        restart;
        fake creating a dummy PSU image with a same version as a running
        PSU, verify no new object is created, but the "Path" property is
        set to the PSU image directory.

Signed-off-by: Lei YU <mine260309@gmail.com>
Change-Id: I860b978250a718eb82d948a1c88bd8f41bb2b2e3