bifrost: Do not run virsh commands if it's not installed

Check if 'virsh' is available before trying to remove the VMs:

Fixes the following warning

./scripts/destroy-env.sh: line 36: virsh: command not found
./scripts/destroy-env.sh: line 37: virsh: command not found
./scripts/destroy-env.sh: line 36: virsh: command not found
./scripts/destroy-env.sh: line 37: virsh: command not found
./scripts/destroy-env.sh: line 36: virsh: command not found
./scripts/destroy-env.sh: line 37: virsh: command not found

Change-Id: I9c82c8b8b40462584c6324871284ba12d660ae9d
Signed-off-by: Markos Chandras <mchandras@suse.de>

diff --git a/bifrost/scripts/destroy-env.sh b/bifrost/scripts/destroy-env.sh
index 3ee6664..9763830 100755 (executable)
--- a/bifrost/scripts/destroy-env.sh
+++ b/bifrost/scripts/destroy-env.sh
@@ -23,8 +23,10 @@ rm -rf ${HOME}/.config/openstack
 if which vbmc &>/dev/null || { [[ -e /opt/stack/bifrost/bin/activate ]] && source /opt/stack/bifrost/bin/activate; }; then
        # Delete all libvirt VMs and hosts from vbmc (look for a port number)
        for vm in $(vbmc list | awk '/[0-9]/{{ print $2 }}'); do
-               virsh destroy $vm || true
-               virsh undefine $vm || true
+               if which virsh &>/dev/null; then
+                       virsh destroy $vm || true
+                       virsh undefine $vm || true
+               fi
                vbmc delete $vm
        done
        which vbmc &>/dev/null || { [[ -e /opt/stack/bifrost/bin/activate ]] && deactivate; }