Add ImportPartial linter

Change-Id: Ie4c35945f1ec971a2446bdc3da81f4a740c765e8
Reviewed-on: http://gerrit.causes.com/43813
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>
Rename ImportPartial -> ImportPath

The naming here was a bit misleading, as the linter not only checked for
the present of underscores indicating a partial, but also for an
unnecessary file extension. Thus, it makes more sense to give it the
name `ImportPath`, since it is ultimately checking that the path of the
import conforms to some specification.

Change-Id: I14ad99cd9d67c41e7bafff66942a2e76c387ba32
Reviewed-on: http://gerrit.causes.com/43814
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>
Update changelog with ImportPath

Change-Id: Ic08294933fe1db37211025fa70cb8ff86b9666a0
Reviewed-on: http://gerrit.causes.com/43815
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>