Fixes for shell execution (#68)

Signed-off-by: sandhi <sagarwal@progress.com>

templates/install.sh.tmpl

@@ -140,7 +140,7 @@ modify_response() {
   url=$(echo $1 | awk -F "," '{print $3}' | awk -F "\"" '{print $4}')
   version=$(echo $1 | awk -F "," '{print $4}' | awk -F "\"" '{print $4}')
   sha256=$(echo $1 | awk -F "," '{print $2}' | awk -F "\"" '{print $4}')
-  echo -e "sha256 $sha256\nurl $url\nversion $version" > "$2"
+  printf "sha256 $sha256\nurl $url\nversion $version" > "$2"
 }
 
 # do_curl URL FILENAME