tree dccbd54d7e68c77805a857afc28b7c5bb9ab0389
parent c4cfc6e8bc9372095b5414ffb432bf437147582a
author Lei YU <mine260309@gmail.com> 1564740274 +0800
committer Lei YU <mine260309@gmail.com> 1565919938 +0800

Get psu inventory path

Invoke GetSubTreePaths on configurable psu inventory base path to get
all the PSU paths.
Add unit test case and meson.build to build the unit test case.

In test/meson.build, manually adding dynamic_linker related options for
OE SDK environment to link_args, so that the built test binary could be
executed in OE SDK environment. Otherwise, the ld will not find the
correct shared libraries in OE SDK.

And you have to execute the test binaries manually in OE SDK, because
meson skips running the tests due to it thinks it's cross compiling.
This is described in README as well.

Tested: Verify the build and unit test run OK in OE SDK
        environment and in OpenBMC CI.
        Verify it gets the PSU inventory paths correctly on Witherspoon.

Signed-off-by: Lei YU <mine260309@gmail.com>
Change-Id: I2e2003c5897d7a623fad7f87d263b71c926fc46d