Add a way to enable file injection for nova/tempest

File injection is disabled by default for the libvirt
driver in nova. This adds a variable to enable file
injection for the libvirt driver and is also used
to configure tempest.conf for running personality
tests.

Change-Id: I34790fadeffd6e3fdc65bd9feed3d6e62316896c
Related-Bug: #1598581

lib/nova_plugins/hypervisor-libvirt

@@ -57,6 +57,14 @@ function configure_nova_hypervisor {
         iniset $NOVA_CONF vnc enabled "false"
     fi
 
+    if isset ENABLE_FILE_INJECTION; then
+        if [ "$ENABLE_FILE_INJECTION" == "True" ]; then
+            # -1 means use libguestfs to inspect the guest OS image for the
+            # root partition to use for file injection.
+            iniset $NOVA_CONF libvirt inject_partition '-1'
+        fi
+    fi
+
     if [[ "$LIBVIRT_TYPE" = "parallels" ]]; then
         iniset $NOVA_CONF libvirt connection_uri "parallels+unix:///system"
         iniset $NOVA_CONF libvirt images_type "ploop"

lib/tempest

@@ -348,6 +348,7 @@ function configure_tempest {
         iniset $TEMPEST_CONFIG compute max_microversion $tempest_compute_max_microversion
     fi
 
+    iniset $TEMPEST_CONFIG compute-feature-enabled personality ${ENABLE_FILE_INJECTION:-False}
     iniset $TEMPEST_CONFIG compute-feature-enabled resize True
     iniset $TEMPEST_CONFIG compute-feature-enabled live_migration ${LIVE_MIGRATION_AVAILABLE:-False}
     iniset $TEMPEST_CONFIG compute-feature-enabled change_password False