Enhance Java dashboard (#114)

* Enhance Java dashboards visuals

- migrate panels versions
- apply rate functions on counters
- dynamic datasource

* Update screenshot

* Update dashboard screenshot

* fixup! Update dashboard screenshot

docs/workloads/java.md

@@ -108,9 +108,7 @@ Go to the Dashboards panel of your Grafana workspace. There will be a folder cal
 
 Open the "Java/JMX" dashboard to view its visualization
 
-
+<img width="2560" alt="Grafana Java dashboard" src="https://user-images.githubusercontent.com/10175027/217821001-2119c81f-94bd-4811-8bbb-caaf1ae5a77a.png">
-![image](https://user-images.githubusercontent.com/10175027/195903211-c47a5746-daa7-41f2-a6ea-bfe13f630c63.png)
-
 
 2. Amazon Managed Service for Prometheus rules and alerts
 

examples/existing-cluster-java/README.md

@@ -98,9 +98,7 @@ Go to the Dashboards panel of your Grafana workspace. There will be a folder cal
 
 Open the "Java/JMX" dashboard to view its visualization
 
-
+<img width="2560" alt="Grafana Java dashboard" src="https://user-images.githubusercontent.com/10175027/217821001-2119c81f-94bd-4811-8bbb-caaf1ae5a77a.png">
-![image](https://user-images.githubusercontent.com/10175027/195903211-c47a5746-daa7-41f2-a6ea-bfe13f630c63.png)
-
 
 2. Amazon Managed Service for Prometheus rules and alerts
 
@@ -108,7 +106,6 @@ Open the Amazon Managed Service for Prometheus console and view the details of y
 
 <img width="1314" alt="image" src="https://user-images.githubusercontent.com/97046295/194904104-09a28577-d149-478e-b0a1-dc21cb7effc1.png">
 
-
 To setup your alert receiver, with Amazon SNS, follow [this documentation](https://docs.aws.amazon.com/prometheus/latest/userguide/AMP-alertmanager-receiver.html)