Add a secondary booting vm example

This one uses rebinds to make simultaneous vms using
a parallel engine to run the non-dependent tasks at
the same time (the 2 vms are created at the same time).

Change-Id: I795fa279d777e7a54e7ef34bf88021600c70a506
Fix python3 compatibility issues in examples

Change-Id: I024207864668751455874cf3cb60de31cc01de87
Merge "Add a secondary booting vm example"
Merge "Fix python3 compatibility issues in examples"