commonPaths: drop v1/internal suffix from backend vdcs baseurl

The url supports api versioning this way.

Dshub private url is design target in our cloud for internal APIs.

https://trello.com/c/hGV510Kn/85-rename-devel-alpha-environment-base-urls

Related MRs:

• dss-oe/dss-oe!923 (merged)
• !1127 (merged)
• https://git.digitalstrom.org/virtual-devices/hekatron-ui/merge_requests/14