**Description**

It would be nice to be able to specify resources for the `git-sync` sidecar in the helm chart values.

**Use case / motivation**

I don't want to use keda for autoscaling and would like to setup a HPA myself. However this is currently not possible since it is not possible to specify resources for the `git-sync` sidecar.

**Are you willing to submit a PR?**

Yes, I am willing to submit a PR.

**Related Issues**

Not that I know of.

chart/tests/test_git_sync_webserver.py
docs = render_chart(
            values={
                "airflowVersion": "1.10.14",
                "dags": {"gitSync": {"enabled": True}, "persistence": {"enabled": True}},
            },
            show_only=["templates/webserver/webserver-deployment.yaml"],
        )
        assert "dags" == jmespath.search("spec.template.spec.volumes[1].name", docs[0])
    def test_should_add_dags_volume_to_the_webserver_if_git_sync_is_enabled_and_persistence_is_disabled(self):
        docs = render_chart(
            values={
                "airflowVersion": "1.10.14",
                "dags": {"gitSync": {"enabled": True}, "persistence": {"enabled": False}},
            },
            show_only=["templates/webserver/webserver-deployment.yaml"],
        )
        assert "dags" == jmespath.search("spec.template.spec.volumes[1].name", docs[0])
    def test_should_add_git_sync_container_to_webserver_if_persistence_is_not_enabled_but_git_sync_is(self):
        docs = render_chart(
            values={
                "airflowVersion": "1.10.14",
                "dags": {
                    "gitSync": {"enabled": True, "containerName": "git-sync"},
                    "persistence": {"enabled": False},
                },
            },
            show_only=["templates/webserver/webserver-deployment.yaml"],
        )
        assert "git-sync" == jmespath.search("spec.template.spec.containers[1].name", docs[0])
    def test_should_have_service_account_defined(self):