Meshery: Install: Allow ad-hoc connectivity test of Grafana

[leecalcote]

Current Behavior
Once a Meshery is connected to a Grafana instance, the user is a shown a Grafana chip (see screenshot) on the Settings and Dashboard pages.

Screenshot

Desired Behavior
In the same fashion that users are allowed to perform ad-hoc connectivity tests to the Kubernetes and service mesh chips, users should be allowed to perform ad-hoc connectivity tests to verify Meshery's current ability to interact with Grafana (Meshery's ability to query Grafana and retrieve boards, panels and metrics).

Acceptance Criteria
This enhancement is complete when:

• [ ] Users are able to invoke an ad-hoc connectivity test with Grafana.
• [ ] Connectivity test retrieves Grafana version for display in a tooltip when the user hovers the mouse over the chip.
• [ ] Connectivity tests display either a success message: "Grafana successfully pinged!" or a failure message: "Could not connect to Grafana."

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Future

• [ ] Users should be able to invoke an ad-hoc connectivity test with each connected Grafana instance.

[leecalcote]

@raghavaggarwal99 once you're comfortable, an enhancement like this one might be an item to undertake.

[leecalcote]

Here's a short video describing this enhancement - https://youtu.be/VLlW_5c1MXk

[ashiscs]

@lee sir, i think this issue is already addressed and needs to be closed?

[leecalcote]

Good call, @ashiscs. Yes, you’re right.