Merge branch 'update-for-resource-group' into 'master'

Describe resource_group can use env variables

See merge request gitlab-org/gitlab!22411

doc/ci/variables/where_variables_can_be_used.md

@@ -23,6 +23,7 @@ There are two places defined variables can be used. On the:
 |:-------------------------------------------|:-----------------|:-----------------------|:----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
 | `environment:url`                          | yes              | GitLab                 | The variable expansion is made by GitLab's [internal variable expansion mechanism](#gitlab-internal-variable-expansion-mechanism).<br/><br/>Supported are all variables defined for a job (project/group variables, variables from `.gitlab-ci.yml`, variables from triggers, variables from pipeline schedules).<br/><br/>Not supported are variables defined in Runner's `config.toml` and variables created in job's `script`. |
 | `environment:name`                         | yes              | GitLab                 | Similar to `environment:url`, but the variables expansion doesn't support the following:<br/><br/>- Variables that are based on the environment's name (`CI_ENVIRONMENT_NAME`, `CI_ENVIRONMENT_SLUG`).<br/>- Any other variables related to environment (currently only `CI_ENVIRONMENT_URL`).<br/>- [Persisted variables](#persisted-variables).                                                                                 |
+| `resource_group`                           | yes              | GitLab                 | Similar to `environment:url`, but the variables expansion doesn't support the following:<br/><br/>- Variables that are based on the environment's name (`CI_ENVIRONMENT_NAME`, `CI_ENVIRONMENT_SLUG`).<br/>- Any other variables related to environment (currently only `CI_ENVIRONMENT_URL`).<br/>- [Persisted variables](#persisted-variables).                                                                                 |
 | `variables`                                | yes              | Runner                 | The variable expansion is made by GitLab Runner's [internal variable expansion mechanism](#gitlab-runner-internal-variable-expansion-mechanism)                                                                                                                                                                                                                                                                                   |
 | `image`                                    | yes              | Runner                 | The variable expansion is made by GitLab Runner's [internal variable expansion mechanism](#gitlab-runner-internal-variable-expansion-mechanism)                                                                                                                                                                                                                                                                                   |
 | `services:[]`                              | yes              | Runner                 | The variable expansion is made by GitLab Runner's [internal variable expansion mechanism](#gitlab-runner-internal-variable-expansion-mechanism)                                                                                                                                                                                                                                                                                   |