* validate policy against nodes, error if not valid
this commit aims to improve the feedback of "runtime" policy
errors which would only manifest when the rules are compiled to
filter rules with nodes.
this change will in;
file-based mode load the nodes from the db and try to compile the rules on
start up and return an error if they would not work as intended.
database-based mode prevent a new ACL being written to the database if
it does not compile with the current set of node.
Fixes #2073
Fixes #2044
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* ensure stderr can be used in err checks
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* test policy set validation
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* add new integration test to ghaction
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* add back defer for cli tst
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
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Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
