Chore: Move from master to main branch (#33693)

* Chore: Move from master branch to main

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

* CI: Upgrade build pipeline tool to v2

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

docs/sources/developers/plugins/data-frames.md

@@ -173,7 +173,7 @@ The data frame structure is inspired by, and uses the [Apache Arrow Project](htt
 
 ### Javascript
 
-The Javascript implementation of data frames is in the [`/src/dataframe` folder](https://github.com/grafana/grafana/tree/master/packages/grafana-data/src/dataframe) and [`/src/types/dataframe.ts`](https://github.com/grafana/grafana/blob/master/packages/grafana-data/src/types/dataFrame.ts) of the [`@grafana/data` package](https://github.com/grafana/grafana/tree/master/packages/grafana-data).
+The Javascript implementation of data frames is in the [`/src/dataframe` folder](https://github.com/grafana/grafana/tree/main/packages/grafana-data/src/dataframe) and [`/src/types/dataframe.ts`](https://github.com/grafana/grafana/blob/main/packages/grafana-data/src/types/dataFrame.ts) of the [`@grafana/data` package](https://github.com/grafana/grafana/tree/main/packages/grafana-data).
 
 ### Go
 

docs/sources/developers/plugins/error-handling.md

@@ -44,7 +44,7 @@ try {
 }
 ```
 
-> **Note:** Grafana displays the exception message in the UI as written, so we recommend using grammatically correct sentences. For more information, refer to the [Documentation style guide](https://github.com/grafana/grafana/blob/master/contribute/style-guides/documentation-style-guide.md).
+> **Note:** Grafana displays the exception message in the UI as written, so we recommend using grammatically correct sentences. For more information, refer to the [Documentation style guide](https://github.com/grafana/grafana/blob/main/contribute/style-guides/documentation-style-guide.md).
 
 Here are some examples of situations where you might want to display an error to the user.
 

docs/sources/developers/plugins/legacy/_index.md

@@ -13,7 +13,7 @@ Grafana already has a strong community of contributors and plugin developers. By
 
 ## Short version
 
-1. [Set up Grafana](https://github.com/grafana/grafana/blob/master/contribute/developer-guide.md)
+1. [Set up Grafana](https://github.com/grafana/grafana/blob/main/contribute/developer-guide.md)
 1. Clone an example plugin into `/var/lib/grafana/plugins` or `data/plugins` (relative to grafana git repo if you're running development version from source dir)
 1. Use one of our example plugins as a starting point
 
@@ -39,7 +39,7 @@ You can use any build system that supports systemjs. All the built content shoul
 
 ## Keep your plugin up to date
 
-New versions of Grafana can sometimes cause plugins to break. Check out our [PLUGIN_DEV.md](https://github.com/grafana/grafana/blob/master/PLUGIN_DEV.md) doc for changes in
+New versions of Grafana can sometimes cause plugins to break. Check out our [PLUGIN_DEV.md](https://github.com/grafana/grafana/blob/main/PLUGIN_DEV.md) doc for changes in
 Grafana that can impact your plugin.
 
 ## Metadata
@@ -55,7 +55,7 @@ and [apps]({{< relref "apps.md" >}}) plugins in the documentation.
 
 The Grafana SDK is quite small so far and can be found here:
 
-- [SDK file in Grafana](https://github.com/grafana/grafana/blob/master/public/app/plugins/sdk.ts)
+- [SDK file in Grafana](https://github.com/grafana/grafana/blob/main/public/app/plugins/sdk.ts)
 
 The SDK contains three different plugin classes: PanelCtrl, MetricsPanelCtrl and QueryCtrl. For plugins of the panel type, the module.js file should export one of these. There are some extra classes for [data sources]({{< relref "data-sources.md" >}}).
 
@@ -85,7 +85,7 @@ export { WorldmapCtrl as PanelCtrl };
 
 There are three ways that you can start developing a Grafana plugin.
 
-1. Set up a Grafana development environment. [(described here)](https://github.com/grafana/grafana/blob/master/contribute/developer-guide.md) and place your plugin in the `data/plugins` folder.
+1. Set up a Grafana development environment. [(described here)](https://github.com/grafana/grafana/blob/main/contribute/developer-guide.md) and place your plugin in the `data/plugins` folder.
 1. Install Grafana and place your plugin in the plugins directory which is set in your [config file](/administration/configuration). By default this is `/var/lib/grafana/plugins` on Linux systems.
 1. Place your plugin directory anywhere you like and specify it grafana.ini.
 
@@ -114,7 +114,7 @@ We have three different examples that you can fork/download to get started devel
 - [simple-json-datasource](https://github.com/grafana/simple-json-datasource) (small data source plugin for querying json data from backends)
 - [simple-app-plugin](https://github.com/grafana/simple-app-plugin)
 - [clock-panel](https://github.com/grafana/clock-panel)
-- [singlestat-panel](https://github.com/grafana/grafana/tree/master/public/app/plugins/panel/singlestat)
+- [singlestat-panel](https://github.com/grafana/grafana/tree/main/public/app/plugins/panel/singlestat)
 - [piechart-panel](https://github.com/grafana/piechart-panel)
 
 ## Other Articles

docs/sources/developers/plugins/legacy/defaults-and-editor-mode.md

@@ -79,7 +79,7 @@ onInitEditMode() {
 
 For editor tabs html, it is best to use Grafana css styles rather than custom styles. This is to preserve the look and feel of other tabs in Grafana.
 
-Most editor tabs should use the [gf-form css class](https://github.com/grafana/grafana/blob/master/public/sass/components/_gf-form.scss) from Grafana. The example below has one row with a couple of columns and each column is wrapped in a div like this:
+Most editor tabs should use the [gf-form css class](https://github.com/grafana/grafana/blob/main/public/sass/components/_gf-form.scss) from Grafana. The example below has one row with a couple of columns and each column is wrapped in a div like this:
 
 ```html
 <div class="section gf-form-group">

docs/sources/developers/plugins/legacy/panels.md

@@ -24,4 +24,4 @@ In this case, make sure the template has a single `<div>...</div>` root.  The pl
 ### Examples
 
 - [clock-panel](https://github.com/grafana/clock-panel)
-- [singlestat-panel](https://github.com/grafana/grafana/tree/master/public/app/plugins/panel/singlestat)
+- [singlestat-panel](https://github.com/grafana/grafana/tree/main/public/app/plugins/panel/singlestat)