Port AutomationTools Hammer based Upgrade scenarios to Nailgun

[jyejare]

Following Scenarios need to be moved on to nailgun from hammer:

• [x] test_capsule.py
  • [x] Scenario_capsule_sync
  • [x] Scenario_capsule_sync_2
• [x] test_client.py
  • [x] Scenario_upgrade_old_client_and_package_installation
  • [x] Scenario_upgrade_new_client_and_package_installation
• [ ] test_contentview.py
  • [ ] ScenarioBug1429201

[vijay8451]

Below Scenarios moved to nailgun from hammer:

1. test_client.py
   • Scenario_upgrade_old_client_and_package_installation
   • Scenario_upgrade_new_client_and_package_installation

PR #6555

[vijay8451]

Below Scenario moved to nailgun from hammer:

2. test_capsule.py
   • Scenario_capsule_sync
   • Scenario_capsule_sync_2

PR #6575