fix: update IL attribute naming convention to match spec (#428)

Author: ericmustin

exporter/jaeger/lib/opentelemetry/exporter/jaeger/encoder.rb

@@ -134,8 +134,8 @@ def encoded_instrumentation_library(instrumentation_library)
           return EMPTY_ARRAY unless instrumentation_library
 
           tags = []
-          tags << encoded_tag('otel.instrumentation_library.name', instrumentation_library.name) if instrumentation_library.name
-          tags << encoded_tag('otel.instrumentation_library.version', instrumentation_library.version) if instrumentation_library.version
+          tags << encoded_tag('otel.library.name', instrumentation_library.name) if instrumentation_library.name
+          tags << encoded_tag('otel.library.version', instrumentation_library.version) if instrumentation_library.version
           tags
         end
 

exporter/jaeger/test/opentelemetry/exporters/jaeger/encoder_test.rb

@@ -95,10 +95,10 @@
 
       name_tag, version_tag = encoded_span.tags
 
-      _(name_tag.key).must_equal('otel.instrumentation_library.name')
+      _(name_tag.key).must_equal('otel.library.name')
       _(name_tag.vStr).must_equal('mylib')
 
-      _(version_tag.key).must_equal('otel.instrumentation_library.version')
+      _(version_tag.key).must_equal('otel.library.version')
       _(version_tag.vStr).must_equal('0.1.0')
     end
 
@@ -111,7 +111,7 @@
 
       name_tag, = encoded_span.tags
 
-      _(name_tag.key).must_equal('otel.instrumentation_library.name')
+      _(name_tag.key).must_equal('otel.library.name')
       _(name_tag.vStr).must_equal('mylib')
     end
   end