Verbose cocoapods output if error or flutter is verbose (#11048)
Verbose cocoapods output if error or flutter is verbose (#11048)

* Output verbose cocoapods output when pod install has an error or if flutter build/run is in -v

* remove repeated stdout

tvolkert/flutter,flutter/flutter,Hixie/flutter,tvolkert/flutter,cbracken/flutter,flutter/flutter,cbracken/flutter,Hixie/flutter,cbracken/flutter,Hixie/flutter,cbracken/flutter,flutter/flutter,tvolkert/flutter,flutter/flutter,cbracken/flutter,tvolkert/flutter,turnidge/flutter,Hixie/flutter,tvolkert/flutter,Hixie/flutter,tvolkert/flutter,tvolkert/flutter,turnidge/flutter,Hixie/flutter,Hixie/flutter,tvolkert/flutter,turnidge/flutter,cbracken/flutter,flutter/flutter,cbracken/flutter,Hixie/flutter,tvolkert/flutter,cbracken/flutter,Hixie/flutter,turnidge/flutter,tvolkert/flutter,flutter/flutter,flutter/flutter,Hixie/flutter,cbracken/flutter,flutter/flutter,cbracken/flutter,turnidge/flutter,flutter/flutter,flutter/flutter