Rename care map in pb format to care_map.pb

The new suffix distinguishes the new care_map from the ones in plain
text format; and thus the old update_verifier won't report an error
upon parsing failures.

Bug: 115740187
Test: Generate OTA files for Pixels
Change-Id: Ia782afd8cbb0f4bb8c363edaa00e92ab302d5d1b
diff --git a/tools/releasetools/test_ota_from_target_files.py b/tools/releasetools/test_ota_from_target_files.py
index 8416af7..1d8a786 100644
--- a/tools/releasetools/test_ota_from_target_files.py
+++ b/tools/releasetools/test_ota_from_target_files.py
@@ -889,6 +889,7 @@
         property_files.required)
     self.assertEqual(
         (
+            'care_map.pb',
             'care_map.txt',
             'compatibility.zip',
         ),
@@ -984,6 +985,7 @@
         property_files.required)
     self.assertEqual(
         (
+            'care_map.pb',
             'care_map.txt',
             'compatibility.zip',
         ),