[#59505526] string_or_number validator
[#59505526] string_or_number validator

cpu and memory are specified in some configs as a bare integer, and in others
as a string.

The string_or_number validator is ripe for improvement, but gets us past this
limitation for now, relatively cleanly.

Integration Test now passes

gds-operations/vcloud-net_launcher,gds-operations/vcloud-net_launcher,gds-operations/vcloud-net_launcher