App Visibility Grafana dashboard enhancement

[heanlan]

Add capabilities that might provide users insights more oriented to understand how applications deployed in a k8s cluster communicate.

P0 items:

• Add Pod/Service Namespace and port metadata into dashboard - Add Namespace and port metadata into Grafana dashboards #57
• Have user-friendly names for columns used in tables and filters. For instance "flowEndSecondsFromSourceNode" could be displayed as "end of flow as reported by source" - Grafana UI improvements #83
• For time-series diagram, do not connect discrete points with line, as they might tell some misleading information, showing throughput is growing/decreasing linearly, which might not be true. For legend of time-series diagram, do not show the "mean" value on the right hand side, as its internal calculation logic is not accurate for our use case. - Grafana UI improvements #83
• For "FlowEndReason" field, do the value mapping from int to string. - Grafana UI improvements #83
• Save configurations/settings of Grafana at runtime, and re-apply those settings when restart Pods. We should expose this option through Helm chart to users, determining whether they would like to save and re-apply the settings. Move Grafana setting files to Persistent Storage #84

P1 items:

• Create a customized "Home page" dashboard, which includes basic introduction to network flow-visibility(pointer to documentation), cluster network overview(diagram monitoring network metrics), links to all the other dashboard Add Grafana home dashboard #101
• Enable adding users by sending email invitations; require configuring the Grafana server to authenticate on mail server
• Aggregate traffic by Pod labels.

[github-actions]

This issue is stale because it has been open 90 days with no activity. Remove stale label or comment, or this will be closed in 90 days

[github-actions]

This issue is stale because it has been open 90 days with no activity. Remove stale label or comment, or this will be closed in 90 days

[github-actions]

This issue is stale because it has been open 90 days with no activity. Remove stale label or comment, or this will be closed in 90 days

[github-actions]

This issue is stale because it has been open 90 days with no activity. Remove stale label or comment, or this will be closed in 90 days

[github-actions]

This issue is stale because it has been open 90 days with no activity. Remove stale label or comment, or this will be closed in 90 days