Update pkg.status with respect to fasta.

pkg/pkg.status

Index: pkg/pkg.status
diff --git a/pkg/pkg.status b/pkg/pkg.status
index 1b0b1ec581d128854adb56ea4977cc42cd5a371a..7efa44cbd59feb566bdb3e2804f65b08cdd61c6e 100644
--- a/pkg/pkg.status
+++ b/pkg/pkg.status
@@ -20,6 +20,12 @@ dart_messages/test/dart_messages_test: Skip  # Requires a package root.
 dev_compiler/test/codegen/*: Skip
 dev_compiler/gen/*: SkipByDesign
 
+# Skip fasta tests for now (https://github.com/dart-lang/sdk/issues/28594).
+front_end/test/fasta/*: Skip
+
+# Anything in rasta is input to fasta unit tests and shouldn't be run as tests.
+front_end/test/fasta/rasta/*: SkipByDesign
+
 [ $runtime == vm && $mode == release && $system == linux ]
 kernel/test/closures_test: Slow, Pass