Add retry to SSH connectivity check

fix up typo 

Remove unused glog import

Remove noisy error message

Make --wait=false non-blocking, --wait=true blocks on system pods

Only copy new or modified files into VM on restart

CI: Retry GitHub status updates

* Refactor config.Config to prepare for multinode

* merge conflict

* removing GetMachineName()

* replacing GetMachineName with a config lookup

* fix tests

* making unit tests happy

* fixing concurrent map writes, only right to viper once

* debugging

* one last test fix

* DeleteAlwaysSucceeds should actually always succeed

* prevent panic when deleting nonexistant cluster

* remove last GetMachineName reference

Health check previously configured driver & exit if not installed

Add memory and wait longer for TestFunctional tests, include node logs