Allow fullstop/dot in config names

[andymanning]

We use a dot notation for our entity names eg.
mobileapp.maintenance.window

When these are download with monaco the . is removed and it becomes mobileappmaintenancewindow

I've found the code that governs the naming and have created a local version which does allow the dot in the names. It works on both Linux (Ubuntu) and Windows.

The change is to allow the regexp to allow dot (.)

file: afero_utils.go
func: func SanitizeName(name string) string

line reg, err := regexp.Compile("[^a-zA-Z0-9-]+")
becomes : reg, err := regexp.Compile("[^a-zA-Z0-9-.]+")

Is this a good idea?

[tatomir146]

@andymanning thanks for reporting this. This will generally be changed once the monaco config 2.0 is implemented. There is general overhaul of download functionality coming.