[quagga]: Update sonic-quagga submodule (#892)

Shuotian Cheng · web-flow · commit 693ad9c4eea8 · 2017-08-15T12:10:43.000-07:00
- [bgpd]: Enable forwarding state flag in graceful restart capability
- [debian]: Add autoreconf_clean
diff --git a/src/sonic-quagga b/src/sonic-quagga
@@ -1 +1 @@
-Subproject commit df6b70902b4c29447ac52277cf6d5b7f6abca71e
+Subproject commit b066bef0e8dcf23b8e1751652397c09e61ee4bdd
