Do not expose custom install profile names (telemetry display)

Our telemetry reports installation profile names, that should rather not be visible.

```
Value	Count	Percentage
freeform_base	1	0%
custom	2	0%
minimal	2	0%
triplo	3	0%
decanter_profile	10	0%
standard	3068	99%
```

For example, triplo or decanter_profile shouldn't show up.

https://backdropcms.org/project/backdrop/telemetry

Or, possibly this should already get filtered before sending?