Support for upgrading NPM
**Is your feature request related to a problem? Please describe:**
Not a current problem

**Describe the solution you'd like:**
Just like we can upgrade Node via hb-config,  it would be nice to have the same capability for NPM

**Describe alternatives you've considered:**
I can do it through command line, but I ended up rebuilding my image since NPM corrupted on me when I tried to upgrade it.  Since the UI indicates a new version is available,  it would be great to handle the upgrade using hb-config

![screenshot_14](https://user-images.githubusercontent.com/30126123/124523226-1536ef80-ddab-11eb-8049-2b5b76a18686.png)

