loongson/pypi: links for requests-opentracing

loongson/mirror Requests-OpenTracing-0.3.0.tar.gz
loongson/mirror Requests-OpenTracing-0.2.0.tar.gz
loongson/mirror Requests-OpenTracing-0.1.0.tar.gz
loongson/mirror Requests-OpenTracing-0.0.1.tar.gz