Merge "Merge "Merge "mntent_test: don't assume /proc isn't the first mount." into android10-tests-dev am: 0462cfb766" into android11-tests-dev am: 0a5cc21c42" into android12-tests-dev am: 46871c040d

Original change: https://android-review.googlesource.com/c/platform/bionic/+/2098734

Change-Id: I10ed03dd6f920e19dc8c62c89217bf583dd21d96
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>