Rename `csv-export` plugin to `grafana-exporter`

[jmcook1186]

What Rename the current csv-exporter plugin (NOT the builtin csv exporter - only the plugin in if-plugins to grafana-exporter

Why We currently have a pair of csv export features - one is a builtin feature that exports a general purpose, more human readable CSV file for a given metric. The other is a plugin that exports a CSV representation of the tree in a format that works well as a data source for grafana visualizations. It is not obvious to users which one to use, especially because there is csv-specific config in a manifest and it can be very confusing which config refers to which plugin. Longer term, we will want to implement a more robust solution to this problem, likely involving a new standard for export features, but for now we can ease the situation substantially with a simple name change. This will enable users to quickly distinguish the CSV export they really want and enable easier separation of config in manifest files.

Context This was stimulated by the following bug report: https://github.com/Green-Software-Foundation/if-plugins/issues/78

Prerequisites/resources None

SoW (scope of work)

• [x] rename csv-exporter plugin to grafana-exporter
• [x] update unit tests and manifests that invoke the plugin
• [x] update README documentation and references on if.greensoftware.foundation

Acceptance criteria

• [x] the csv-exporter plugin in if-plugins is renamed to grafana-exporter

• GIVEN the file and function name has been udpated WHEN a user navigates to the if-plugins repository THEN they will not see any references to csv-export, but they will find grafana-exporter

• [x] Unit tests are updated to use the new name

• GIVEN the file and function name has been udpated WHEN a developer runs the unit tests for grafana-exporter THEN: all the unit tests pass

• [x] Manifests invoking the csv-exporter are updated to use grafana-exporter

• GIVEN the file and function name has been udpated WHEN a developer runs all the manifests in if repository THEN: no manifests fail due to misnaming of grafana-exporter plugin

• [x] Documentation has been updated

• GIVEN the file and function name has been udpated WHEN a user reads our documentation (in READMEs in if or if-plugins or on if.greensoftware.foundation THEN: no references to csv-exporter exist but instructions for using grafana-exporter do exist

[jmcook1186]

Code, tests and readme changes are in https://github.com/Green-Software-Foundation/if-plugins/pull/86 if-docs updates are in https://github.com/Green-Software-Foundation/if-docs/pull/70

[zanete]

Capturing the status in the weekly call: @narekhovhannisyan could review