Fix for Bug 1368529 and Bug 1368528

Sqgen uses the presents of pdcp installed on a system to determine if it
should copy files across the system. On a single node install there will
be errors if this happens. Now trafodion_installer will look for the
/usr/bin/pdcp and it is exists will error out and ask the user to rename
temporarily or uninstall temporarily.

Change-Id: I4f80f7f1d199932143021df90b690e30b1d12f8e
Merge "Fix for Bug 1368529 and Bug 1368528"