* Replacing calls to dataTaskWithRequest:completionHandler:
In objc ApiClient-body.mustache, replacing calls to AFNetworking's deprecated `dataTaskWithRequest:completionHandler:` with calls to `dataTaskWithRequest:uploadProgress:downloadProgress:completionHandler:`.
* Ran the shell script under ./bin/ to update Petstore sample so that CIs can verify the change: ./bin/objc-petstore.sh and ./bin/security/objc-petstore.sh
* [objc] Update deployment target to 8.0
Updates the test project deployment target to 8.0, as that's the lowest
supported by the latest XCode.
* [objc] Update petstore tests based on current master
Makes sure the tests are based on the latest version of master.
* [objc] Allow specifying the serialization timezone
Now it's possible to specify the timezone used for serializing dates
* add line break test to petstore-security-test.yaml
* add objc/swift security testing
* add go,scala,qt5cpp for security test
* add security test for typescript
* fix go security issue, fix consumes,produces line break
