While validating framework changes for bug 1840899 I caught this during a charm-octavia test run in a TLS enabled deployment with ``ssl=only`` configured for ``rabbitmq-server``.

From ``/var/log/octavia/octavia-worker.log``:
2019-08-29 09:53:40.572 2483 ERROR oslo.messaging._drivers.impl_rabbit [-] Connection failed: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:852) (retrying in 32.0 seconds): ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:852)

And surely enough the data represented in ``/var/lib/charm/octavia/rabbit-client-ca.pem`` differ from what is on the relation.

root@juju-77088e-zaza-fdbdfb4a2723-8:/var/lib/charm/octavia# cat /var/lib/charm/octavia/rabbit-client-ca.pem 
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
ubuntu@test:~$ juju run --unit octavia/0 'relation-ids amqp'
amqp:26
ubuntu@test:~$ juju run --unit octavia/0 'relation-get -r amqp:26 - rabbitmq-server/0'
egress-subnets: 10.5.0.52/32
hostname: 10.5.0.52
ingress-address: 10.5.0.52
password: sMPG4nw5KC4RGz3TZNTqgpjtH6kRWL5wRXG5ZVNHSrKSW6FcF5mYSqBHC7dWwHCr
private-address: 10.5.0.52
ssl_ca: 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
ssl_port: "5671"
ubuntu@test:~$ base64 -d
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
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----