CLOUDSTACK-1222: Remove double quotes in upgrade script s/"//g

Signed-off-by: Rohit Yadav <bhaisaab@apache.org>
(cherry picked from commit 0895c340024ac65edc7a32a70a8fda62c0385a24)

Signed-off-by: Rohit Yadav <bhaisaab@apache.org>