Enable TestAuthDescribeFailure integration test (#2420)

## Changes
1. remove t.Skip directive from TestAuthDescribeFailure integration test
2. remove checking the host in the test

## Why
1. This enables integration test that exercises `databricks auth
describe` command, which was previously throwing errors in the CI/CD
pipeline. For the nonexistent profile check to fail, we need to create a
new profile file for the CLI to check (otherwise the configuration skips
checking of the provided profile actually exists).
2. I removed the assertion for the host part because it is not relevant
for the test, and setting that up just required more code in the test
setup.

## Tests
The integration test is passing

integration/cmd/auth/describe_test.go

@@ -2,10 +2,15 @@ package auth_test
 
 import (
 	"context"
+	"path/filepath"
 	"regexp"
 	"strings"
 	"testing"
 
+	"github.com/databricks/cli/internal/testutil"
+	"github.com/databricks/cli/libs/databrickscfg"
+	"github.com/databricks/databricks-sdk-go/config"
+
 	"github.com/databricks/cli/internal/testcli"
 	"github.com/databricks/databricks-sdk-go"
 	"github.com/stretchr/testify/require"
@@ -34,8 +39,19 @@ func TestAuthDescribeSuccess(t *testing.T) {
 }
 
 func TestAuthDescribeFailure(t *testing.T) {
-	t.Skipf("Skipping because of https://github.com/databricks/cli/issues/2010")
+	testutil.CleanupEnvironment(t)
 
+	// set up a custom config file:
+	home := t.TempDir()
+	cfg := &config.Config{
+		ConfigFile: filepath.Join(home, "customcfg"),
+		Profile:    "profile1",
+	}
+	err := databrickscfg.SaveToProfile(context.Background(), cfg)
+	require.NoError(t, err)
+	t.Setenv("DATABRICKS_CONFIG_FILE", filepath.Join(home, "customcfg"))
+
+	// run the command:
 	ctx := context.Background()
 	stdout, _ := testcli.RequireSuccessfulRun(t, ctx, "auth", "describe", "--profile", "nonexistent")
 	outStr := stdout.String()
@@ -44,10 +60,5 @@ func TestAuthDescribeFailure(t *testing.T) {
 	require.Contains(t, outStr, "Unable to authenticate: resolve")
 	require.Contains(t, outStr, "has no nonexistent profile configured")
 	require.Contains(t, outStr, "Current configuration:")
-
-	w, err := databricks.NewWorkspaceClient(&databricks.Config{})
-	require.NoError(t, err)
-
-	require.Contains(t, outStr, "✓ host: "+w.Config.Host)
 	require.Contains(t, outStr, "✓ profile: nonexistent (from --profile flag)")
 }