Add //third_party/sqlite to dirs_to_snapshot, remove net_sql.patch

third_party/sqlite/src/test/fkey4.test

Index: third_party/sqlite/src/test/fkey4.test
diff --git a/third_party/sqlite/src/test/fkey4.test b/third_party/sqlite/src/test/fkey4.test
index d6dd2fc8ff3aaa5497bde6f61b0ed3661efe790b..79cf663478f0cbf722a5a976e09c2a2f540603f3 100644
--- a/third_party/sqlite/src/test/fkey4.test
+++ b/third_party/sqlite/src/test/fkey4.test
@@ -42,10 +42,12 @@ do_test fkey4-1.2 {
   set ::STMT1 [sqlite3_prepare_v2 $::DB $::SQL -1 TAIL]
   sqlite3_step $::STMT1
 } {SQLITE_CONSTRAINT}
+verify_ex_errcode fkey4-1.2b SQLITE_CONSTRAINT_FOREIGNKEY
 do_test fkey4-1.3 {
   set ::STMT2 [sqlite3_prepare_v2 $::DB $::SQL -1 TAIL]
   sqlite3_step $::STMT2
 } {SQLITE_CONSTRAINT}
+verify_ex_errcode fkey4-1.3b SQLITE_CONSTRAINT_FOREIGNKEY
 do_test fkey4-1.4 {
   db eval {SELECT * FROM t2}
 } {1 3}