Add an Allowed Bugs section
Add an Allowed Bugs section

We should get points for honesty for calling out in the README bugs that
we can't and won't fix.

Signed-off-by: mulhern <7b51bcf507bcd7afb72bf8663752c0ddbeb517f6@redhat.com>

stratis-storage/stratisd,stratis-storage/stratisd,stratis-storage/stratisd