Add gcp auth package as optional dependency to the HTTP/GRPC OTLP Exporters

Author: DylanRussell

exporter/opentelemetry-exporter-otlp-proto-grpc/pyproject.toml

@@ -49,6 +49,11 @@ otlp_proto_grpc = "opentelemetry.exporter.otlp.proto.grpc.trace_exporter:OTLPSpa
 Homepage = "https://github.com/open-telemetry/opentelemetry-python/tree/main/exporter/opentelemetry-exporter-otlp-proto-grpc"
 Repository = "https://github.com/open-telemetry/opentelemetry-python"
 
+[project.optional-dependencies]
+gcp-auth = [
+  "opentelemetry-exporter-credential-provider-gcp >= 1.38.0",
+]
+
 [tool.hatch.version]
 path = "src/opentelemetry/exporter/otlp/proto/grpc/version/__init__.py"
 

exporter/opentelemetry-exporter-otlp-proto-http/pyproject.toml

@@ -48,6 +48,11 @@ otlp_proto_http = "opentelemetry.exporter.otlp.proto.http._log_exporter:OTLPLogE
 Homepage = "https://github.com/open-telemetry/opentelemetry-python/tree/main/exporter/opentelemetry-exporter-otlp-proto-http"
 Repository = "https://github.com/open-telemetry/opentelemetry-python"
 
+[project.optional-dependencies]
+gcp-auth = [
+  "opentelemetry-exporter-credential-provider-gcp >= 1.38.0",
+]
+
 [tool.hatch.version]
 path = "src/opentelemetry/exporter/otlp/proto/http/version/__init__.py"