workload: fix and rename benchmark script

Benchmark script uploaded by the custom_image is installing a benchmark
and should be named accordingly.

Also, fix the size of the read benchmark.

Change-Id: Id75db4b06acfa04145feb3bf07ea6a9c91b03d9f
Closes-Bug: #1502838

rally-jobs/extra/install_benchmark.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+set -e
+
+main() {
+    cat > ~/dd_test.sh <<'EOF'
+#!/bin/sh
+time_seconds(){ (time -p $1 ) 2>&1 |awk '/real/{print $2}'; }
+file=/tmp/test.img
+c=1000 #1GB
+write_seq_1gb=$(time_seconds "dd if=/dev/zero of=$file bs=1M count=$c")
+read_seq_1gb=$(time_seconds "dd if=$file of=/dev/null bs=1M count=$c")
+[ -f $file ] && rm $file
+
+echo "{
+    \"write_seq_1gb\": $write_seq_1gb,
+    \"read_seq_1gb\": $read_seq_1gb
+    }"
+EOF
+
+    chmod a+x ~/dd_test.sh
+}
+
+main

rally-jobs/rally-neutron.yaml

@@ -603,8 +603,8 @@
       context:
         image_command_customizer:
           command:
-            local_path: "/home/jenkins/.rally/extra/script_benchmark.sh"
+            local_path: "/home/jenkins/.rally/extra/install_benchmark.sh"
-            remote_path: "./script_benchmark.sh"
+            remote_path: "./install_benchmark.sh"
           flavor:
             name: "m1.tiny"
           image:

rally/plugins/openstack/scenarios/vm/vmtasks.py

@@ -199,7 +199,7 @@ class VMTasks(vm_utils.VMScenario):
     def boot_runcommand_delete_custom_image(self, **kwargs):
         """Boot a server from a custom image, run a command that outputs JSON.
 
-        Example Script in rally-jobs/extra/script_benchmark.sh
+        Example Script in rally-jobs/extra/install_benchmark.sh
         """
 
         return self.boot_runcommand_delete(