Cisco adapter that strips "ntp clock-period"

First cut of scripts to strip out "ntp clock-period".
Currently CiscoSNMP script is NOT working - it is reporting that it
can't find the cleanup parser script.
The CiscoIOSGeneric scripts (for TFTP, SCP, CLI) all need re-writing to
make them more modular. Should have all scripts call the same cleanup
command, rather than spreading cleanup commands across the individual
scripts.