Rename autoplay_app to ephemeral_app

Test: Builds and boots
Change-Id: I3db64e12f0390c6940f5745eae83ce7efa7d65a9
diff --git a/tools/check_seapp.c b/tools/check_seapp.c
index 35e6238..230eccf 100644
--- a/tools/check_seapp.c
+++ b/tools/check_seapp.c
@@ -202,7 +202,7 @@
 key_map rules[] = {
                 /*Inputs*/
                 { .name = "isSystemServer", .dir = dir_in, .fn_validate = validate_bool },
-                { .name = "isAutoPlayApp",  .dir = dir_in, .fn_validate = validate_bool },
+                { .name = "isEphemeralApp",  .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,                              },