adding quotes to wget URL in onos-build-vm.py

Change-Id: Idbdf83994c5c63e2a89ea501eefd1d2d8e23b742
diff --git a/onos-build-vm.py b/onos-build-vm.py
index 21e86d7..84ce363 100755
--- a/onos-build-vm.py
+++ b/onos-build-vm.py
@@ -24,7 +24,7 @@
     # start with sendline
     #TODO consider resizing the HDD
     url = 'https://gerrit.onlab.us/gitweb?p=ONOS-VM.git;a=blob_plain;hb=refs/heads/master;f=vm-setup.sh'
-    vm.sendline( 'wget -O - %s | bash' % url )
+    vm.sendline( 'wget -O - "%s" | bash' % url )
     # end with expect prompt
     vm.expect( prompt )