Enable HTTP request log (access log) in Production

[tatu-at-datastax]

Although #752 was completed months ago, it doesn't look like HTTP request logs are enabled in Production kubes. This is probably because src/main/resources/application.yaml has:

quarkus:
  http:
    # access log format, must be explicitly enabled
    access-log:
      pattern: "%h %l %t \"%r\" %s %b"

and does not have enabled: true (which as per https://quarkus.io/guides/http-reference#configuring-http-access-logs is needed, as property quarkus.http.access-log.enabled.
And we do not (I think, given there are no entries in Splunk) have matching ENV override (QUARKUS_HTTP_ACCESS_LOG_ENABLED ) either.

There are at least 2 ways we could do this:

1. Enable in application.yaml for all envs (although could also disable for tests, via src/test/resources/application.yaml to reduce noise)
2. Enable via deployment (Helm Chart) by ENV QUARKUS_HTTP_ACCESS_LOG_ENABLED.

Unless there are specific reasons not to, I am leaning towards (1).