Migrate from using glance image-list to openstackclient

Modify instance of `glance image-list` to `openstack image list`,
in an effort to migrate all commands to unified CLI.

Change-Id: Ieef661d209606e088fbf6a3a394f9a6577667618
diff --git a/exercises/boot_from_volume.sh b/exercises/boot_from_volume.sh
index d756685..a2ae275 100755
--- a/exercises/boot_from_volume.sh
+++ b/exercises/boot_from_volume.sh
@@ -71,10 +71,10 @@
 # ------
 
 # List the images available
-glance image-list
+openstack image list
 
 # Grab the id of the image to launch
-IMAGE=$(glance image-list | egrep " $DEFAULT_IMAGE_NAME " | get_field 1)
+IMAGE=$(openstack image list | egrep " $DEFAULT_IMAGE_NAME " | get_field 1)
 die_if_not_set $LINENO IMAGE "Failure getting image $DEFAULT_IMAGE_NAME"
 
 # Security Groups
diff --git a/exercises/client-args.sh b/exercises/client-args.sh
index b360f1e..2f85d98 100755
--- a/exercises/client-args.sh
+++ b/exercises/client-args.sh
@@ -122,7 +122,7 @@
         STATUS_GLANCE="Skipped"
     else
         echo -e "\nTest Glance"
-        if glance $TENANT_ARG $ARGS image-list; then
+        if openstack $TENANT_ARG $ARGS image list; then
             STATUS_GLANCE="Succeeded"
         else
             STATUS_GLANCE="Failed"
diff --git a/exercises/client-env.sh b/exercises/client-env.sh
index cc518d9..4a0609a 100755
--- a/exercises/client-env.sh
+++ b/exercises/client-env.sh
@@ -132,7 +132,7 @@
         STATUS_GLANCE="Skipped"
     else
         echo -e "\nTest Glance"
-        if glance image-list; then
+        if openstack image list; then
             STATUS_GLANCE="Succeeded"
         else
             STATUS_GLANCE="Failed"
diff --git a/exercises/floating_ips.sh b/exercises/floating_ips.sh
index 7e90e5a..57f48e0 100755
--- a/exercises/floating_ips.sh
+++ b/exercises/floating_ips.sh
@@ -71,10 +71,10 @@
 # ------
 
 # List the images available
-glance image-list
+openstack image list
 
 # Grab the id of the image to launch
-IMAGE=$(glance image-list | egrep " $DEFAULT_IMAGE_NAME " | get_field 1)
+IMAGE=$(openstack image list | egrep " $DEFAULT_IMAGE_NAME " | get_field 1)
 die_if_not_set $LINENO IMAGE "Failure getting image $DEFAULT_IMAGE_NAME"
 
 # Security Groups
diff --git a/exercises/neutron-adv-test.sh b/exercises/neutron-adv-test.sh
index 6679670..5b3281b 100755
--- a/exercises/neutron-adv-test.sh
+++ b/exercises/neutron-adv-test.sh
@@ -134,7 +134,7 @@
 }
 
 function get_image_id {
-    local IMAGE_ID=$(glance image-list | egrep " $DEFAULT_IMAGE_NAME " | get_field 1)
+    local IMAGE_ID=$(openstack image list | egrep " $DEFAULT_IMAGE_NAME " | get_field 1)
     die_if_not_set $LINENO IMAGE_ID "Failure retrieving IMAGE_ID"
     echo "$IMAGE_ID"
 }
diff --git a/exercises/volumes.sh b/exercises/volumes.sh
index 1dff6a4..504fba1 100755
--- a/exercises/volumes.sh
+++ b/exercises/volumes.sh
@@ -68,10 +68,10 @@
 # ------
 
 # List the images available
-glance image-list
+openstack image list
 
 # Grab the id of the image to launch
-IMAGE=$(glance image-list | egrep " $DEFAULT_IMAGE_NAME " | get_field 1)
+IMAGE=$(openstack image list | egrep " $DEFAULT_IMAGE_NAME " | get_field 1)
 die_if_not_set $LINENO IMAGE "Failure getting image $DEFAULT_IMAGE_NAME"
 
 # Security Groups