New tag 2.10.6-RC2.

Second release candidate for 2.10.6 release.

Change-Id: I5ffa43c138c1d021c9ced6c0a1bb3c7abc34cf8d
Signed-off-by: Oleg Drokin <green@whamcloud.com>

LUSTRE-VERSION-GEN

 #!/bin/sh
 
-DEFAULT_VERSION=2.10.6-RC1
+DEFAULT_VERSION=2.10.6-RC2
 LVF=LUSTRE-VERSION-FILE
 
 LF='