BUG/MINOR: checks: tcp-check actions are enums, not flags

In recent commit 5ecb77f (MEDIUM: checks: add send/expect tcp based check),
bitfields were mistakenly used at some places for the actions. Fortunately,
the only two actions right now are 1 and 2 so they don't share any bit in
common and the bug has no impact.

No backport is needed.
2 files changed