add env variables

Author: vishaalram02

opentelemetry-sdk/src/opentelemetry/sdk/environment_variables/__init__.py

@@ -511,6 +511,33 @@
 associated with gRPC or HTTP requests.
 """
 
+OTEL_EXPORTER_OTLP_TRACES_CHANNEL_OPTIONS = (
+    "OTEL_EXPORTER_OTLP_TRACES_CHANNEL_OPTIONS"
+)
+"""
+.. envvar:: OTEL_EXPORTER_OTLP_TRACES_CHANNEL_OPTIONS
+
+The :envvar:`OTEL_EXPORTER_OTLP_TRACES_CHANNEL_OPTIONS` represents the channel options for the spans exporter.
+"""
+
+OTEL_EXPORTER_OTLP_METRICS_CHANNEL_OPTIONS = (
+    "OTEL_EXPORTER_OTLP_METRICS_CHANNEL_OPTIONS"
+)
+"""
+.. envvar:: OTEL_EXPORTER_OTLP_METRICS_CHANNEL_OPTIONS
+
+The :envvar:`OTEL_EXPORTER_OTLP_METRICS_CHANNEL_OPTIONS` represents the channel options for the metrics exporter.
+"""
+
+OTEL_EXPORTER_OTLP_LOGS_CHANNEL_OPTIONS = (
+    "OTEL_EXPORTER_OTLP_LOGS_CHANNEL_OPTIONS"
+)
+"""
+.. envvar:: OTEL_EXPORTER_OTLP_LOGS_CHANNEL_OPTIONS
+
+The :envvar:`OTEL_EXPORTER_OTLP_LOGS_CHANNEL_OPTIONS` represents the channel options for the logs exporter.
+"""
+
 OTEL_EXPORTER_OTLP_TRACES_COMPRESSION = "OTEL_EXPORTER_OTLP_TRACES_COMPRESSION"
 """
 .. envvar:: OTEL_EXPORTER_OTLP_TRACES_COMPRESSION