ADD: reset manager with custom configuration

Change-Id: I782ccf0e88b343b0b01cdd27224df080ebb64a75

Author: ll128

YTKNetwork/YTKNetworkAgent.m

@@ -62,7 +62,7 @@ - (instancetype)init {
     self = [super init];
     if (self) {
         _config = [YTKNetworkConfig sharedConfig];
-        _manager = [AFHTTPSessionManager manager];
+        _manager = [[AFHTTPSessionManager alloc] initWithSessionConfiguration:_config.sessionConfiguration];
         _requestsRecord = [NSMutableDictionary dictionary];
         _processingQueue = dispatch_queue_create("com.yuantiku.networkagent.processing", DISPATCH_QUEUE_CONCURRENT);
         _allStatusCodes = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(100, 500)];

YTKNetwork/YTKNetworkConfig.h

@@ -70,6 +70,8 @@ NS_ASSUME_NONNULL_BEGIN
 @property (strong, nonatomic, readonly) NSArray<id<YTKCacheDirPathFilterProtocol>> *cacheDirPathFilters;
 ///  Security policy will be used by AFNetworking. See also `AFSecurityPolicy`.
 @property (strong, nonatomic) AFSecurityPolicy *securityPolicy;
+///  SessionConfiguration will be used to initialize AFHTTPSessionManager. Default is nil.
+@property (strong, nonatomic) NSURLSessionConfiguration* sessionConfiguration;
 
 ///  Add a new URL filter.
 - (void)addUrlFilter:(id<YTKUrlFilterProtocol>)filter;