Merge "emulator: do not enforce 8G system image partition" am: 7012508b

Original change: https://android-review.googlesource.com/c/platform/build/+/2393534



Change-Id: Idc41e5f4118c7e7aa0b082ed4031892e8d05e252
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>