501 on buy-car from remote member

Recent Carbon snapshot builds started failing (somewhere between 2017-02-09 and 2017-02-12) in CSIT on Buycar_Failover suite (most recent: [0]).

I believe this [1] change has introduced the failure, because it [2] fails [3] on Sandbox, but its parent [4] change does not [5].

Copied response text:
{"errors":{"error":[{"error-type":"application","error-tag":"operation-not-supported","error-message":"No implementation of RPC AbsoluteSchemaPath

{path=[(urn:opendaylight:params:xml:ns:yang:controller:config:sal-clustering-it:car-purchase?revision=2014-08-18)buy-car]}

available"}]}}

Karaf.log contains nothing (at the default log level).

[0] https://logs.opendaylight.org/releng/jenkins092/controller-csit-3node-clustering-only-carbon/591/archives/log.html.gz#s1-s6-t3-k3-k1-k1-k1-k1-k1-k1-k3-k7-k1
[1] https://git.opendaylight.org/gerrit/50622
[2] https://jenkins.opendaylight.org/sandbox/job/integration-multipatch-test-carbon/9/parameters/
[3] https://logs.opendaylight.org/sandbox/jenkins091/controller-csit-3node-clustering-only-carbon/11/archives/log.html.gz#s1-s6-t3-k3-k1-k1-k1-k1-k1-k1-k3-k7-k1
[4] https://jenkins.opendaylight.org/sandbox/job/integration-multipatch-test-carbon/10/parameters/
[5] https://logs.opendaylight.org/sandbox/jenkins091/controller-csit-3node-clustering-only-carbon/12/archives/log.html.gz#s1-s6-t3-k3-k1-k1-k1-k1-k1-k1-k3-k7-k1