Add new untrusted_v2_app domain

untrusted_v2_app is basically a refinement of untrusted_app with legacy
capabilities removed and potentially backwards incompatible changes.

This is not currently hooked up to anything.

Bug: 33350220
Test: builds
Change-Id: Ic9fad57476bc2b6022b1eaca8667bf6d844753c2
diff --git a/tools/check_seapp.c b/tools/check_seapp.c
index 96b9ebf..c23c1f6 100644
--- a/tools/check_seapp.c
+++ b/tools/check_seapp.c
@@ -204,6 +204,7 @@
                 /*Inputs*/
                 { .name = "isSystemServer", .dir = dir_in, .fn_validate = validate_bool },
                 { .name = "isEphemeralApp",  .dir = dir_in, .fn_validate = validate_bool },
+                { .name = "isV2App",        .dir = dir_in, .fn_validate = validate_bool },
                 { .name = "isOwner",        .dir = dir_in, .fn_validate = validate_bool },
                 { .name = "user",           .dir = dir_in,                              },
                 { .name = "seinfo",         .dir = dir_in,                              },