Update releasetools for new init_boot.img

This new init_boot.img contains the ramdisk that used to reside in the
boot.img file.

Test: set BOARD_PREBUILT_INIT_BOOT_IMAGE to an external init_boot.img
      - Check that "m" pulls in the init_boot.img to
      out/target/product/vsoc_x86_64/
      - Check that "m dist" adds the init_boot.img to
      aosp_cf_x86_64_phone-img-eng.devinmoore.zip
Test: atest --host releasetools_test
Bug: 203698939
Change-Id: If7ef2cf093e5e525529c7c44333c0f40f6ba0764
diff --git a/tools/releasetools/test_sign_target_files_apks.py b/tools/releasetools/test_sign_target_files_apks.py
index 92dca9a..0f13add 100644
--- a/tools/releasetools/test_sign_target_files_apks.py
+++ b/tools/releasetools/test_sign_target_files_apks.py
@@ -62,6 +62,9 @@
       'avb_boot_add_hash_footer_args':
           ('--prop com.android.build.boot.os_version:R '
            '--prop com.android.build.boot.security_patch:2019-09-05'),
+      'avb_init_boot_add_hash_footer_args':
+          ('--prop com.android.build.boot.os_version:R '
+           '--prop com.android.build.boot.security_patch:2019-09-05'),
       'avb_system_add_hashtree_footer_args':
           ('--prop com.android.build.system.os_version:R '
            '--prop com.android.build.system.security_patch:2019-09-05 '
@@ -77,6 +80,9 @@
       'avb_boot_add_hash_footer_args':
           ('--prop com.android.build.boot.os_version:R '
            '--prop com.android.build.boot.security_patch:2019-09-05'),
+      'avb_init_boot_add_hash_footer_args':
+          ('--prop com.android.build.boot.os_version:R '
+           '--prop com.android.build.boot.security_patch:2019-09-05'),
       'avb_system_add_hashtree_footer_args':
           ('--prop com.android.build.system.os_version:R '
            '--prop com.android.build.system.security_patch:2019-09-05 '