Optionally include/exclude grpc headers by name#58

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jbf154 wants to merge 2 commits intoopentracing-contrib:masterfrom

jbf154:exclude_include_headers

Commits on Aug 23, 2021

updates to optionally include or exclude specific headers from the span's grpc.headers tag
jbf154
committed
added client tests; refactored server tests to be like client tests
jbf154
committed