add java virtual path

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

syft/cataloger/java/archive_parser.go

@@ -148,7 +148,8 @@ func (j *archiveParser) discoverMainPackage() (*pkg.Package, error) {
 		Type:         pkg.JavaPkg,
 		MetadataType: pkg.JavaMetadataType,
 		Metadata: pkg.JavaMetadata{
-			Manifest: manifest,
+			VirtualPath: j.virtualPath,
+			Manifest:    manifest,
 		},
 	}, nil
 }
@@ -184,6 +185,7 @@ func (j *archiveParser) discoverPkgsFromPomProperties(parentPkg *pkg.Package) ([
 					Type:         pkg.JavaPkg,
 					MetadataType: pkg.JavaMetadataType,
 					Metadata: pkg.JavaMetadata{
+						VirtualPath:   j.virtualPath,
 						PomProperties: propsObj,
 						Parent:        parentPkg,
 					},

syft/pkg/java_metadata.go

@@ -4,6 +4,7 @@ import "github.com/package-url/packageurl-go"
 
 // JavaMetadata encapsulates all Java ecosystem metadata for a package as well as an (optional) parent relationship.
 type JavaMetadata struct {
+	VirtualPath   string         `json:"virtual-path"`
 	Manifest      *JavaManifest  `mapstructure:"Manifest" json:"manifest"`
 	PomProperties *PomProperties `mapstructure:"PomProperties" json:"pomProperties"`
 	Parent        *Package       `json:"parentPackage"` // TODO: should this be included in the json output?
@@ -11,7 +12,7 @@ type JavaMetadata struct {
 
 // PomProperties represents the fields of interest extracted from a Java archive's pom.xml file.
 type PomProperties struct {
-	Path       string
+	Path       string            `mapstructure:"path" json:"path"`
 	Name       string            `mapstructure:"name" json:"name"`
 	GroupID    string            `mapstructure:"groupId" json:"groupId"`
 	ArtifactID string            `mapstructure:"artifactId" json:"artifactId"`