Add Jetty project to external/jetty.

Bug: 14441587
Change-Id: If3dfb53d94a1d098f2eb0422934b52d855cda6be
diff --git a/lib/slf4j-jdk14-1.6.1.pom.sha1 b/lib/slf4j-jdk14-1.6.1.pom.sha1
new file mode 100644
index 0000000..169a426
--- /dev/null
+++ b/lib/slf4j-jdk14-1.6.1.pom.sha1
@@ -0,0 +1 @@
+6f0ca912337d5b0d1711f8e0f4f283cd13ec518d
\ No newline at end of file