System should not exit when template copying fails

[saramonzon]

Sometimes when copying the template the copy is succesful but some of the metadata cannot be copied due to differences in filesystems.

Here the sys.exit should be removed and the error message be improved so the error is checked as warning and fixed accordingly:

buisciii-tools/bu_isciii/new_service.py

Line 184 in 86556c4

sys.exit()

Some tests have been performed as using the copy() function instead of default copy2() that is not supposed to copy metadata but the error was still prompted.