Skipping admin password tests for KVM and QEMU

Change-Id: I63f0500a9a60d5dd58546d2d37c15fb7b18f7fd1
Added check for default network to tests using create_server

* Added check for a default network when using create_server
  directly. All other tests use the create_active_server
  method, which already performs conditional injection of networks

Change-Id: Icabe510dea15c617082970b33fe85cf3c1c67c37
Merge "Skipping admin password tests for KVM and QEMU"
Merge "Added check for default network to tests using create_server"