libfstab_fuzzer: Add dictionary to guide the fuzzer

This is probably an overkill, but still, add a collection of
interesting keywords that may appear in a fstab file.

Also add myself to the "CC" list of this fuzz target.

BYPASS_INCLUSIVE_LANGUAGE_REASON="slave" or MS_SLAVE is a mount flag

Bug: 204056804
Test: adb shell /data/fuzz/x86_64/libfstab_fuzzer/libfstab_fuzzer \
  -dict=/data/fuzz/x86_64/libfstab_fuzzer/fstab.dict
Change-Id: Ife55837212a711dcbeed4f00d97da0cb022c7156