Prepare NEWS entry for 2.10.6

...and schedule release date. This is a bug-fix release.
Signed-off-by: Klaus Aehlig <aehlig@google.com>
Reviewed-by: Helga Velroyen <helgav@google.com>

NEWS

@@ -2,6 +2,20 @@ News
 ====
 
 
+Version 2.10.6
+--------------
+
+*(Released Mon, 30 Jun 2014)*
+
+- Make Ganeti tolerant towards differnt openssl library
+  version on different nodes (issue 853).
+- Allow hspace to make useful predictions in multi-group
+  clusters with one group overfull (isse 861).
+- Various gnt-network related fixes.
+- Fix disk hotplug with userspace access.
+- Various documentation errors fixed.
+
+
 Version 2.10.5
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