Added ldap automount to nsswitch, added autofs module to nfs-homes profile
Added NEED_GSSD=yes to /etc/default/nfs-common as workaround for Bug #1270445

https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/1270445
Modified nfs module to start gssd service with nfsv4
Finalized and added autofs module