Update git submodules

* Update org.eclipse.mylyn from branch 'master'
  to 1a8eae8009abfad496837dc1c41a110f69c6e653
  - 568183: Vagrant setup for local website test
    
    Change-Id: Idc1957f36966e32d88ad5f215c47b02c0ab80e95
    Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=568183
    Signed-off-by: Frank Becker <eclipse@frank-becker.de>
diff --git a/org.eclipse.mylyn b/org.eclipse.mylyn
index 6771e74..1a8eae8 160000
--- a/org.eclipse.mylyn
+++ b/org.eclipse.mylyn
@@ -1 +1 @@
-Subproject commit 6771e74f9bb5517ba5e323923b08bde283ff5738
+Subproject commit 1a8eae8009abfad496837dc1c41a110f69c6e653