Backport of fix(txn): validate verbs into release/1.19.x #21520
Merged
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Backport
This PR is auto-generated from #21519 to be assessed for backporting due to the inclusion of the label backport/1.19.
The below text is copied from the body of the original PR.
Description
There are two entry points into the state store:
In the latter case, errors are not acknowledged because the log must be processed by Consul. It is possible in this case that if a future version of Consul is using syntax, such as Txn API Verbs, that the current version does not understand, it will fail to apply successfully, causing a divergence with other servers.
This PR makes two types of changes:
Overview of commits