Draft: 4.6.x distributed improvements

[jmferrerqualtio]

4.6.x chart qualtio improvements

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[jmferrerqualtio]

- BUG, enabling opentelemetry breaks the gateway, and FEATURE allow using resourceAttributes:
  - https://github.com/wso2/helm-apim/pull/198/changes#diff-512bffea7969fbfad597f4f7d4240dd34e45f0578e2c3e90a8f34359e7fe1b77R477
  - https://github.com/wso2/helm-apim/pull/198/changes#diff-8743726ea2eb1e7bd0214792139cfdd026539aecce8eae058bf6e4c889e75b5aL282
- BUG, enabling elkanalytics breaks the gateway:
  - https://github.com/wso2/helm-apim/pull/198/changes#diff-94547524d3bae3d464791f2f4d769ddacd84470eee23a655261fee1cfb83bd7dR4
- allow custom log4j2 configuration:
  - https://github.com/wso2/helm-apim/pull/198/changes#diff-94547524d3bae3d464791f2f4d769ddacd84470eee23a655261fee1cfb83bd7dR602
  - https://github.com/wso2/helm-apim/pull/198/changes#diff-35cc9de6fbc4eaf7ae8b07ed74290c245328310d6473e9e3c3a18280dce2e33cR181
- allow json output in logs using a template:
  - https://github.com/wso2/helm-apim/pull/198/changes#diff-35cc9de6fbc4eaf7ae8b07ed74290c245328310d6473e9e3c3a18280dce2e33cR186
  - https://github.com/wso2/helm-apim/pull/198/changes#diff-94547524d3bae3d464791f2f4d769ddacd84470eee23a655261fee1cfb83bd7dR16
- add virtualhosts:
  - https://github.com/wso2/helm-apim/pull/198/changes#diff-8743726ea2eb1e7bd0214792139cfdd026539aecce8eae058bf6e4c889e75b5aR149
  - https://github.com/wso2/helm-apim/pull/198/changes#diff-512bffea7969fbfad597f4f7d4240dd34e45f0578e2c3e90a8f34359e7fe1b77R401
- add jmx monitoring to chart:
  - https://github.com/wso2/helm-apim/pull/198/changes#diff-8743726ea2eb1e7bd0214792139cfdd026539aecce8eae058bf6e4c889e75b5aR301
  - https://github.com/wso2/helm-apim/pull/198/changes#diff-65a4e3dee1d941135c2234723e0eabd06d47b401651fa5ae1f5a44aad3f56c3eR224
  - https://github.com/wso2/helm-apim/pull/198/changes#diff-cbfd2da44de8807d1cf49b6d42471409dbfa3cb0fb172e8a06a3ecac14ec2478R29
- add sidecars to pods, used in my case to scrape jmx and send to otel
  - https://github.com/wso2/helm-apim/pull/198/changes#diff-512bffea7969fbfad597f4f7d4240dd34e45f0578e2c3e90a8f34359e7fe1b77R649
  - https://github.com/wso2/helm-apim/pull/198/changes#diff-95c0fd074629f8c10e6322f8cfca8667f0369de93ac174643b7d4e3ac7c1df92R296