Add janitors to the OWNERS file am: f5c0a86a97

Original change: https://android-review.googlesource.com/c/platform/external/mockftpserver/+/3423597

Change-Id: I6b883847739162e1751e120c0cb36db6c0f3276e
Signed-off-by: Automerger Merge Worker <[email protected]>