Apply suggestions from code review

Author: TG1999

vulnerabilities/importers/istio.py

@@ -59,10 +59,9 @@ def process_file(self, path):
         for release in data.get("releases") or []:
             # If it is of form "All releases prior to x"
             if "All releases prior" in release:
-                release = release.strip()
-                release = release.split(" ")
+                _ ,_, release = release.strip().rpartition(" ")
                 constraints.append(
-                    VersionConstraint(version=SemverVersion(release[4]), comparator="<")
+                    VersionConstraint(version=SemverVersion(release), comparator="<")
                 )
 
             # Eg. 'All releases 1.5 and later'
@@ -97,14 +96,15 @@ def process_file(self, path):
 
             affected_packages.append(
                 AffectedPackage(
-                    package=PackageURL(type="golang", name="istio"),
+                    package=PackageURL(type="golang", namespace="istio.io", 
+name="istio"),
                     affected_version_range=GolangVersionRange(constraints=constraints),
                 )
             )
 
             affected_packages.append(
                 AffectedPackage(
-                    package=PackageURL(type="github", name="istio"),
+                    package=PackageURL(type="github", namespace="istio",  name="istio"),
                     affected_version_range=GitHubVersionRange(constraints=constraints),
                 )
             )

vulnerabilities/tests/test_data/istio/istio-expected.json

@@ -8,7 +8,7 @@
       {
         "package": {
           "type": "golang",
-          "namespace": null,
+          "namespace": "istio.io",
           "name": "istio",
           "version": null,
           "qualifiers": null,
@@ -20,7 +20,7 @@
       {
         "package": {
           "type": "github",
-          "namespace": null,
+          "namespace": "istio",
           "name": "istio",
           "version": null,
           "qualifiers": null,