EO seeing "failed to get index settings" errors with Jaeger indices

###ENV

$ oc get csv -n service-mesh
NAME DISPLAY VERSION REPLACES PHASE
container-security-operator.v3.3.4 Quay Container Security 3.3.4 container-security-operator.v3.3.1 Succeeded
elasticsearch-operator.5.2.2-21 OpenShift Elasticsearch Operator 5.2.2-21 elasticsearch-operator.5.2.1-5 Succeeded
jaeger-operator.v1.24.1 Red Hat OpenShift Jaeger 1.24.1 jaeger-operator.v1.20.3 Succeeded
kiali-operator.v1.24.6 Kiali Operator 1.24.6 kiali-operator.v1.24.5 Succeeded
redhat-openshift-pipelines-operator.v1.1.2 Red Hat OpenShift Pipelines Operator 1.1.2 openshift-pipelines-operator.v1.1.1 Succeeded
servicemeshoperator.v2.0.8 Red Hat OpenShift Service Mesh 2.0.8-0 servicemeshoperator.v2.0.2 Succeeded

###ISSUE

It's possible to see continue in the Elasticsearch Operator logs one error indicating that's not able to get the dynamic index setting for the jaeger indices like these:

{"_ts":"2021-10-15T12:03:30.72868073Z","_level":"0","_component":"elasticsearch-operator","_message":"failed to get index settings","_error":{"cause":{"Value":"string","Type":{},"Offset":81,"Struct":"IndexMapperSettings","Field":"settings.index.mapper.dynamic"},"destination_type":"estypes.IndexSettings","index":"jaeger-service-2021-10-15","msg":"failed to decode response body"},"cluster":"elasticsearch","index":"jaeger-service-2021-10-15","namespace":"service-mesh"}

It seems that jaeger is able to continue collecting logs and rotating the indices, but these kind of messages are filling the Elasticsearch Operator logs.

$ oc logs jaeger-es-index-cleaner-27282235-db2p6
Removing jaeger-service-2021-11-07
Removing jaeger-span-2021-11-07

Also, for adding more information, the EO has no issues connecting with the Elasticsearch running in the service mesh namespace:

$ curl -vv -k -H "Authorization: Bearer $TOKEN" https://elasticsearch.service-mesh.svc:9200/_cat/indices

•   Trying 172.30.21.42...
• TCP_NODELAY set
• Connected to elasticsearch.service-mesh.svc (172.30.21.42) port 9200 (#0)
• ALPN, offering h2
• ALPN, offering http/1.1
• successfully set certificate verify locations:
•   CAfile: /etc/pki/tls/certs/ca-bundle.crt
    CApath: none
  ...
  < HTTP/1.1 200 OK
  < Content-Length: 258
  < Content-Type: text/plain; charset=UTF-8
  < Gap-Upstream-Address: localhost:9200
  < Date: Fri, 15 Oct 2021 11:56:23 GMT
  < 
  green open jaeger-span-2021-10-15    72Uzfh10Twy-qxXdjSi30A 3 1 72086 0  9.7mb  4.5mb
  green open jaeger-service-2021-10-15 h0Y1etnoQbmnAu1XTHEIOQ 3 1    11 0 37.5kb 18.7kb
  green open .security                 uXA0G_dFSUucxZQ5Cu4mZg 1 1     6 2 64.1kb   31kb