Fix system info missing in local instance.

Bug: 200085376
Test: acloud-dev create -vv --branch aosp-master --build-id 7731383 \
--build-target aosp_cf_x86_64_phone-userdebug --system-branch aosp-master \
--system-build-target aosp_cf_x86_64_phone-userdebug --system-build-id 7734345 \
--local-instance

Change-Id: I6ce8c59bf1ca094cec465351cdcfcf6ad5843efc
2 files changed