* Fixed location of pcaps and bmv2 logs
Also added reference to P4Runtime request logs to welcome message
* Fixed pcap/log location for Thrift/CLI-based switch class
* Updated vm provisioning scripts to build and install P4Runtime
Also, hardcoded commit ID for each tool to improve reproducibility
of exercises (the P4Runtime API could change in the future).
TODO: there is a permission error at line 114 of user-bootstrap.sh that
needs to be fixed.
* Removed unnecessary compiler flags when bulding PI
* Fixed permission error and updated BMv2 and PI commit IDs
Carmelo CasconeandNate Foster
