Store packet filter rules in the cache. The match expressions are derived
from the filter rules, so these do not need to be stored explicitly, but ensure
they are properly reconstructed when the cache is read back.
Update the tests to include these fields, and provide representative values.
Updates #12639
Change-Id: I9bdb972a86d2c6387177d393ada1f54805a2448b
Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
M. J. FrombergerandGitHub
4f1406f05a