Update spec to 7.1.17

Author: CZP

YZAppSDK.podspec

@@ -9,7 +9,7 @@
 Pod::Spec.new do |s|
 
   s.name         = "YZAppSDK"
-  s.version      = "7.1.16"
+  s.version      = "7.1.17"
   s.summary      = "An AppSDK for Youzanyun."
   s.description  = 'There are praise cloud AppSDK is for mobile applications to build the electricity trading system'   \
                    'through an SDK will be able to integrate in the APP to provide the entire transaction services.'