Checking for NFS and copying over debug tar files

Checking to see if trying to install trafodion on a NFS disk and if this
is detected, the script will print and error and exit.
trafodion_debug*.tgz files will now be copied to the trafodion user idea
as trafodion_build.tgz

Edit: Changed error message.
Change-Id: Ib2ad47ed1b1bc8103edf7c91c31cb468dc5abbfd