Optionally overwrite package value in test config.

If package_name is set for an android_test module, package names in its
AndroidTest.xml config need to be updated too.

Test: test_config_fixer_test.py
Fixes: 145011263
Change-Id: I52f17ef1d1902364b9bcfec4f6e246bd655dbf09

scripts/manifest.py

@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-"""A tool for inserting values from the build system into a manifest."""
+"""A tool for inserting values from the build system into a manifest or a test config."""
 
 from __future__ import print_function
 from xml.dom import minidom
@@ -65,6 +65,15 @@ def ensure_manifest_android_ns(doc):
                        ns.value)
 
 
+def parse_test_config(doc):
+  """ Get the configuration element. """
+
+  test_config = doc.documentElement
+  if test_config.tagName != 'configuration':
+    raise RuntimeError('expected configuration tag at root')
+  return test_config
+
+
 def as_int(s):
   try:
     i = int(s)