Create example of E2E test with Ginkgo

[aemarkov]

Create an example how to implement E2E test (DataImport in this example) using Ginkgo.

How to run

1. Put script to the testkit_v2/run.sh

export licensekey="<...>"
export hv_ssh_dst="<...>"
export namespace="<...>"

ginkgo \
  -v \
  -timeout 30m \
  "$@" \
  -- \
  -testkitdir "$PWD" \
  -sshhost "$hv_ssh_dst" \
  -hypervisorkconfig kube-hypervisor.config \
  -skipoptional \
  -keepstate \
  -hvstorageclass "linstor-r1"  \
  -clustertype "Ubuntu 22 mini" \
  -namespace "$namespace" \

2. Run

 ./run.sh ./tests/data-importer  

Important notes:

• Each test suite should be located in a separate dir
• Use ginkgo instead of go test
• Pass path to dir instead of .go file