[Maintainer Update] sysutils/glances: 3.1.6.2 -> 3.1.7

[Ashton Fagg]

Attached diff updates sysutils/glances to latest version 3.1.7.

Changelog viewable here:

https://github.com/nicolargo/glances/releases/tag/v3.1.7

Built and tested on amd64, seems to be working as well as it was before.

Thanks.