add f2fs device aliasing related arguments in vold

To support f2fs device aliasing feature, include related arguments in
vold.

Bug: 336319772
Test: add a device with "exp_alias" tag in fstab
Change-Id: Ibb8766f4c77d532a596f5581f3de8dfb334ba2fd
Signed-off-by: Daeho Jeong <daehojeong@google.com>
9 files changed