Disable 677-fsi2 on RI.

Test: m
bug: 80004139
Change-Id: I2615a3509f01dadcadab2912d867b27f062737f3
diff --git a/test/knownfailures.json b/test/knownfailures.json
index 31a0eef..7d2cae8 100644
--- a/test/knownfailures.json
+++ b/test/knownfailures.json
@@ -956,6 +956,7 @@
     {
         "tests": ["616-cha-unloading",
                   "674-hiddenapi",
+                  "677-fsi2",
                   "678-quickening",
                   "679-locks",
                   "999-redefine-hiddenapi"],