Handle HTML errors in all RestTemple requests in CVR (easy win)

[mandawilson]

Done Condition (What do we need? Why do we need it? Keep this is small as possible!)

In all RestTemplate requests we should handle getting an exception that includes an HTML response, e.g. https://github.com/knowledgesystems/cmo-pipelines/pull/907/files. We might also want to output the status code.

Note (from: spring-projects/spring-framework#24964):

IOException or HttpMessageNotReadableException are problems while reading the response body which can only be read once. This is why the code here raises a plain RestClientException. By contrast for 4xx and 5xx we raise RestClientResponseException (or one of its sub-classes) with the body.

Technical Description (How are we going to achieve the above)

Potential Issues

Dependencies

Technical Requirements

Outside People/Teams

Changes

[sheridancbio]

@averyniceday I have approved the PR .. feel free to merge and deploy (or I can do it if you prefer)