proto: default expanded enum to unknown

vbatts · vbatts · commit eb1d649f185c · 2015-09-15T13:39:08.000-04:00
per opencontainers#179 (comment) Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
diff --git a/proto/config.proto b/proto/config.proto
@@ -62,6 +62,7 @@ message Process {
 }
 
 enum PlatformType {
+	UNKNOWN = 0;
 	LINUX = 1;
 }
 
