Fix directory path in permissions set-up

The relative path reference for trafodion/core and dcs were incorrect.
This resulted in a failure of trafodion user to access the LD_PRELOAD
library built by jenkins user.
Fix by specifying explicit full path to chmod command.

Also trafodion user should not write into phoenix_test repo created
by jenkins, since jenkins won't be able to clean it up. Give trafodion
it's own copy.

Change-Id: Ic10d912c0661fca8bfc6284e064163f1934abd3f
Merge "Fix directory path in permissions set-up"