[octavia] Fix custom image preparation

Added octavia_test_bin_download_cmd variable to
allow using different command for test_bin file
download, like:-
octavia_test_bin_download_cmd: "curl -O --insecure"

Also use absolute path for test_bin file as relative
path requires the script to run from specific directory.

Change-Id: Id7a6cabd10889abad8ea54745fb6fec7b1db4ffc

ansible/install/group_vars/all.yml

@@ -65,6 +65,9 @@ iptables_file: /etc/sysconfig/iptables
 
 #octavia_test_bin_path:
 
+# Command to use to download test_bin file
+octavia_test_bin_download_cmd: "wget"
+
 ########################################
 # Browbeat Workloads
 ########################################

ansible/install/roles/workloads/templates/custom-cirros.file

@@ -1,5 +1,5 @@
 #!/bin/sh
 
 sudo echo "nameserver {{ dns_server }}" > /etc/resolv.conf
-cd /home/cirros/ && wget "{{ octavia_test_bin_path }}"
+cd /home/cirros/ && {{ octavia_test_bin_download_cmd }} "{{ octavia_test_bin_path }}"
 echo "Browbeat workload installed"

ansible/install/roles/workloads/templates/octavia-userdata.file

@@ -8,5 +8,5 @@ chmod 777 /home/cirros/test_server.bin
 sudo su  && echo 1 > /proc/sys/vm/overcommit_memory
 
 for i in $(seq 0 $(($NUM_POOLS-1))); do
-    ./home/cirros/test_server.bin -port  $(($PORT+ $i)) &
+    /home/cirros/test_server.bin -port  $(($PORT+ $i)) &
 done