rootdir: update fstab

Change-Id: I04ccecbe53a143c2dca96e56f950b7ca35ccdd9c
change permissions for storage

Change-Id: Ib56ebde70e2fbb5aa7e2a94d5f2b12696556acc9
enable multi user

Change-Id: I8208bdec42df784f035cd24fc4c7f5e74a590de4
enable minikin

Change-Id: I6385480ea89bd964a42f6043e188ce0d22966edf
persist

Change-Id: If0bc7e9332821b017d6db01cf5f9a2fa2fb5560d