Ambiguous import issue

[j-mai]

There seems to be a problem with hashicorp 1.7.0 that results in an ambiguous import error:

github.com/xmidt-org/webpa-common/service/consul imports
        github.com/hashicorp/consul/api: ambiguous import: found package github.com/hashicorp/consul/api in multiple modules:
        github.com/hashicorp/consul v1.4.2 
        github.com/hashicorp/consul/api v1.7.0

Workaround is to add this line to go.mod:
github.com/hashicorp/consul v1.7.0

Make sure to not do go mod tidy afterwards because the line will go away if you do.

[kristinapathak]

I originally solved a consul dependency issue in #525, but it was reintroduced when wepba-common started importing argus (which was importing an older version of wepba-common with the consul issue). I bumped wepba-common in this argus commit, so once we import this commit or something past it, this issue is solved.