Add documentation of new dependency scanning env vars

doc/user/application_security/dependency_scanning/index.md

@@ -175,6 +175,8 @@ The following variables are used for configuring specific analyzers (used for a
 | `DS_PIP_DEPENDENCY_PATH`                | `gemnasium-python` |                              | Path to load Python pip dependencies from. ([Introduced](https://gitlab.com/gitlab-org/gitlab/issues/12412) in GitLab 12.2) |
 | `DS_PYTHON_VERSION`                     | `retire.js`        |                              | Version of Python. If set to 2, dependencies are installed using Python 2.7 instead of Python 3.6. ([Introduced](https://gitlab.com/gitlab-org/gitlab/issues/12296) in GitLab 12.1)|
 | `MAVEN_CLI_OPTS`                        | `gemnasium-maven`  | `"-DskipTests --batch-mode"` | List of command line arguments that will be passed to `maven` by the analyzer. See an example for [using private repos](../index.md#using-private-maven-repos). |
+| `GRADLE_CLI_OPTS`                        | `gemnasium-maven`  | | List of command line arguments that will be passed to `gradle` by the analyzer. |
+| `SBT_CLI_OPTS`                        | `gemnasium-maven`  | | List of command-line arguments that the analyzer will pass to `sbt`. |
 | `BUNDLER_AUDIT_UPDATE_DISABLED`         | `bundler-audit`    | `"false"`                      | Disable automatic updates for the `bundler-audit` analyzer. Useful if you're running Dependency Scanning in an offline, air-gapped environment.|
 | `BUNDLER_AUDIT_ADVISORY_DB_URL`         | `bundler-audit`    | `https://github.com/rubysec/ruby-advisory-db` | URL of the advisory database used by bundler-audit. |
 | `BUNDLER_AUDIT_ADVISORY_DB_REF_NAME`    | `bundler-audit`    | `master`                     | Git ref for the advisory database specified by `BUNDLER_AUDIT_ADVISORY_DB_URL`. |