tree 719579c5bdf23a703f7a7695cad24b25470eb296
parent a965cf06a6bb6b130a2e4f1202978aac9124be68
author Matt Spinler <spinler@us.ibm.com> 1536350656 -0500
committer Matt Spinler <spinler@us.ibm.com> 1536350817 -0500

Traverse full GetSubTree output

It isn't safe to assume that the interface passed in to
GetSubtree will be the first one in the output, so need
to traverse the whole structure.

Tested:  phosphor-discover-system-state was failing with the
         C++ mapper, but works with this fix.

Change-Id: Ibc29280f9d51d8067e764da1745d30378bf7068d
Signed-off-by: Matt Spinler <spinler@us.ibm.com>