Updates the format of the service map that is served over
the local api to be keyed without the "svc:" prefix. This
change is backwards incompatible, this is OK because there
is only one tailnet with the services-in-nodecapmap feature
flag enabled, and the client side changes that start showing
services over local api have not been released. (These were
added in 4fcce6000d3d3f79d1ac1fca571a50efb059cbf2).
Updates tailscale/corp#40052
Signed-off-by: Adriano Sela Aviles <adriano@tailscale.com>
618dfd4081