Mapping Helpers

Provide a helper tool of some kind to allow "smart" map updating.

For example, a switch has node001 to node048 in correct order in ports 1 to 48. Some sort of tool that allows for bulk/regex filling of map data (even after the fact) would improve map modification.

E.g.
```
inventory modify-map switch01 [1-48] node[001-048]
```