[AutoPR cognitiveservices/data-plane/ComputerVision] Update Cognitive…

…Service ComputerVision API to V2 (#1378) (#1392)

* Generated from c2567da015994dac3301f495b6c5011d28ceaffe

Add post-processing directive to swap argument order for RecognizeText to position the url argument ahead of the mode argument.

autorest does not generate the intended order, so we add a post-processing directive,
for each target language,

* Generated from 973322cfd6ec2ced60a732f53b5318ceded5de7b

Fix validation errors

* Generated from 70efe042d607cbd973734e432da395ed35191a03

Add Spanish support for ServiceLanguage

This is for parity with V1.