Updated 3rd party build script to handle regenerating clients.
Updated 3rd party build script to handle regenerating clients.

svagionitis/aws-sdk-cpp,aws/aws-sdk-cpp,aws/aws-sdk-cpp,svagionitis/aws-sdk-cpp,JoyIfBam5/aws-sdk-cpp,aws/aws-sdk-cpp,aws/aws-sdk-cpp,aws/aws-sdk-cpp,zeliard/aws-sdk-cpp,ambasta/aws-sdk-cpp,ambasta/aws-sdk-cpp,jt70471/aws-sdk-cpp,svagionitis/aws-sdk-cpp,ambasta/aws-sdk-cpp,zeliard/aws-sdk-cpp,jt70471/aws-sdk-cpp,JoyIfBam5/aws-sdk-cpp,aws/aws-sdk-cpp,kahkeng/aws-sdk-cpp,kahkeng/aws-sdk-cpp,cedral/aws-sdk-cpp,svagionitis/aws-sdk-cpp,JoyIfBam5/aws-sdk-cpp,cedral/aws-sdk-cpp,cedral/aws-sdk-cpp,cedral/aws-sdk-cpp,kahkeng/aws-sdk-cpp,JoyIfBam5/aws-sdk-cpp,cedral/aws-sdk-cpp,zeliard/aws-sdk-cpp,jt70471/aws-sdk-cpp,awslabs/aws-sdk-cpp,awslabs/aws-sdk-cpp,svagionitis/aws-sdk-cpp,kahkeng/aws-sdk-cpp,awslabs/aws-sdk-cpp,jt70471/aws-sdk-cpp,ambasta/aws-sdk-cpp,awslabs/aws-sdk-cpp,svagionitis/aws-sdk-cpp,cedral/aws-sdk-cpp,JoyIfBam5/aws-sdk-cpp,JoyIfBam5/aws-sdk-cpp,jt70471/aws-sdk-cpp,zeliard/aws-sdk-cpp,jt70471/aws-sdk-cpp