Change the import paths for go get access

Change the import paths for go get access

This allows other projects to do a go get and use this repo.
go get github.com/multicloud-k8s/src/k8splugin
will do the job.
import github.com/multicloud-k8s/src/k8splugin
will import the root package

Issue-ID: MULTICLOUD-666
Change-Id: I2f41c88c5a7fb3305b78cce8a83a0e102baa444c
Signed-off-by: Kiran Kamineni <kiran.k.kamineni@intel.com>