Allow creating VMs with emulated TPM device

Author: mkowalski

01_install_requirements.sh

@@ -19,7 +19,7 @@ if [ -z "${METAL3_DEV_ENV}" ]; then
   # TODO -- come up with a plan for continuously updating this
   # Note we only do this in the case where METAL3_DEV_ENV is
   # unset, to enable developer testing of local checkouts
-  git reset 67afcb3315b44e2c68121493a819819966e588a2 --hard
+  git reset 67afcb3315b44e2c68121493a819819966e588a2 --hard  # FIXME(mko) After merging metal3-dev-env #848
   popd
 fi
 

config_example.sh

@@ -227,6 +227,9 @@ set -x
 # Configure size of extra disks added to VMs
 # export VM_EXTRADISKS_SIZE="10G"
 
+# Add TPM2.0 emulator to VMs
+# export VM_TPM_EMULATOR=true
+
 # Provide additional master/worker ignition configuration, will be
 # merged with the installer provided config, can be used to modify
 # the default nic configuration etc