fix gate jobs for building centos images

Change-Id: I31c489737a0f5403b204dc065390822534b5dd6d

tools/gate/build-images

@@ -1,16 +1,20 @@
 #!/bin/bash -xe
 
 PLUGIN=$1
-
+export DIB_MIN_TMPFS=10
 case "$PLUGIN" in
     "cloudera")
         # manually call each distro for cloudera, so we can cleanup
         # cache and generated images from the previous run
         # (saving space a bit)
         for distro in ubuntu centos; do
-            tox -e venv -- sahara-image-create -x -u -p $PLUGIN -i $distro
-            find . -maxdepth 1 -name '*cloudera*.qcow2' -delete
-            sudo rm -rf ~/.cache/image-create
+            # NOTE(vgridnev): Number of versions are growing; testing only 2 latest
+            # releases of CDH
+            for version in 5.4 5.5; do
+              tox -e venv -- sahara-image-create -x -u -p $PLUGIN -i $distro -v $version
+              find . -maxdepth 1 -name '*cloudera*.qcow2' -delete
+              sudo rm -rf ~/.cache/image-create
+            done
         done
         ;;
     # this case is needed until we use ambari version <= 2.1.1