Update configurations to set up LDLM where needed.

Update configurations to set up LDLM where needed.

Convert scripts over to new setup methods where possible to avoid them
becoming increasingly outdated.  Some scripts are already broken, and
I don't use them so I'm not sure whether to remove them or fix them.

Scripts updated are llmount.sh, llrmount.sh, llecho.sh, lldlm.sh,
llmount-client.sh and llmount-server.sh.  They use the default config
scripts net*.cfg, obd*.cfg, ldlm.cfg, mds.cfg as needed to do the same
thing they used to do.