Use allowlist for Git-related fields to include in metadata (#1187)

## Changes

When new fields are added they should not automatically propagate to the
bundle metadata.

## Tests

Test passes.

bundle/deploy/metadata/compute.go

@@ -6,6 +6,7 @@ import (
 	"path/filepath"
 
 	"github.com/databricks/cli/bundle"
+	"github.com/databricks/cli/bundle/config"
 	"github.com/databricks/cli/bundle/metadata"
 )
 
@@ -25,8 +26,13 @@ func (m *compute) Apply(_ context.Context, b *bundle.Bundle) error {
 		Config:  metadata.Config{},
 	}
 
-	// Set git details in metadata
-	b.Metadata.Config.Bundle.Git = b.Config.Bundle.Git
+	// Set Git details in metadata
+	b.Metadata.Config.Bundle.Git = config.Git{
+		Branch:         b.Config.Bundle.Git.Branch,
+		OriginURL:      b.Config.Bundle.Git.OriginURL,
+		Commit:         b.Config.Bundle.Git.Commit,
+		BundleRootPath: b.Config.Bundle.Git.BundleRootPath,
+	}
 
 	// Set job config paths in metadata
 	jobsMetadata := make(map[string]*metadata.Job)

bundle/deploy/metadata/compute_test.go

@@ -30,6 +30,7 @@ func TestComputeMetadataMutator(t *testing.T) {
 					OriginURL:      "www.host.com",
 					Commit:         "abcd",
 					BundleRootPath: "a/b/c/d",
+					Inferred:       true,
 				},
 			},
 			Resources: config.Resources{
@@ -76,6 +77,9 @@ func TestComputeMetadataMutator(t *testing.T) {
 					OriginURL:      "www.host.com",
 					Commit:         "abcd",
 					BundleRootPath: "a/b/c/d",
+
+					// Test that this field doesn't carry over into the metadata.
+					Inferred: false,
 				},
 			},
 			Resources: metadata.Resources{