Mer: Handle VMs started outside of qtc more considerately

[qtc] Mer: Handle VMs started outside of qtc more considerately

Signed-off-by: Martin Kampas <martin.kampas@jolla.com>
Mer: Do not interrupt build/deploy when VM is not started

- Handle SDK the same way as emulator - with a dedicated build step
- Wait for VM to start instead of aborting build/deploy

[qtc] Mer: Do not interrupt build/deploy when VM is not started

Signed-off-by: Martin Kampas <martin.kampas@jolla.com>