Updated ldiskfs version

ldiskfs/configure.ac

 # Process this file with autoconf to produce a configure script.
 
-AC_INIT([Lustre ldiskfs], 3.0.6, [https://bugzilla.lustre.org/])
+AC_INIT([Lustre ldiskfs], 3.0.7, [https://bugzilla.lustre.org/])
 AC_CONFIG_SRCDIR([lustre-ldiskfs.spec.in])
 
 # Don't look for install-sh, etc. in ..