NFP - Fix for wily base image path

Disk-image builder was looking for base ubuntu wily image from
"http://cloud-images.ubuntu.com/" location and currently that
image is not there. So changed image location in disk image
create script.

Change-Id: I9413be4a5be68e1d62ae6c88c34341f5649a026c
Closes-bug: 1651740

gbpservice/contrib/nfp/tools/image_builder/disk_image_create.py

@@ -129,6 +129,25 @@ def dib():
         image_name = 'nfp_reference_service'
     dib_args.append(str(image_name))
 
+    # wily support is removed from ubuntu 'current' release,
+    # download/copy to loation as expected by diskimage-builder
+    if conf['ubuntu_release']['release'] == "wily":
+        import commands
+        commands.getoutput("mkdir -p %s" % dib['cache_dir'])
+        wily_SHA256SUMS = "%s/SHA256SUMS.ubuntu.wily.amd64" % dib['cache_dir']
+        if not os.path.isfile(wily_SHA256SUMS):
+            ret = subprocess.call(["wget", "http://cloud-images-archive.ubuntu.com/releases/wily/release-20160715/SHA1SUMS", "-r", "-O", wily_SHA256SUMS])
+            if ret:
+                print "ERROR: failed to download ubuntu wily image SHA256SUMS"
+                return
+        if ((not os.path.isfile(dib['cache_dir'] + '/wily-server-cloudimg-amd64-root.tar.gz')) or (not dib['offline'])):
+            # wget the tar file and SHASUM file and save to dib['cache_dir']
+            wily_image = "%s/wily-server-cloudimg-amd64-root.tar.gz" % dib['cache_dir']
+            ret = subprocess.call(["wget", "http://cloud-images-archive.ubuntu.com/releases/wily/release-20160715/ubuntu-15.10-server-cloudimg-amd64-root.tar.gz", "-r", "-O", wily_image])
+            if ret:
+                print "ERROR: failed to download ubuntu wily image"
+                return
+
     os.chdir(cur_dir)
     out_dir = 'output'
     if not os.path.isdir(out_dir):