Adding pgbench dashboard to grafonnet.

[smanda99]

Type of change

• Refactor
• New feature
• Bug fix
• Optimization
• Documentation Update

Description

Adding pgbench dashboard to grafonnet.

Related Tickets & Documents

• Related Issue #
• Closes #

Checklist before requesting a review

• I have performed a self-review of my code.
• If it is a core feature, I have added thorough tests.

Testing

• Please describe the System Under Test.
• Please provide detailed steps to perform tests related to this code change.
• How were the fix/results from this change verified? Please provide relevant screenshots or results.

[smanda99]

Old dashboard: https://grafana.rdu2.scalelab.redhat.com:3000/d/d8d9edd1-448e-45b5-bd1c-e8d43600a6c0/pgbench-dashboard?orgId=1

new dashboard: https://grafana.rdu2.scalelab.redhat.com:3000/d/ee79dc45-5403-49d2-b3e4-1feac48d0a7f/pgbench-dashboard-test?orgId=1&showCategory=Data%20links&tab=query&from=now%2Fy&to=now

[vishnuchalla]

lgtm. Thanks :)