Rename jdk11 folders to match jdk9 and jdk15

Change-Id: I2bf11cf920f9cb3488e2465fa6a9f8a704dcd22e
diff --git a/third_party/openjdk/jdk-11/osx.tar.gz.sha1 b/third_party/openjdk/jdk-11/osx.tar.gz.sha1
new file mode 100644
index 0000000..13c2e79
--- /dev/null
+++ b/third_party/openjdk/jdk-11/osx.tar.gz.sha1
@@ -0,0 +1 @@
+4212f0fcd33202e7ae1ea6a4d10cdedeb3c166b4
\ No newline at end of file