Python: Telemetry and observability follow-up (#833)

* updated telemetry work

* updated telemetry

* slight improvement

* updated tests

* fixes for telemetry

* fixes for mypy

* added settings setup to runner to avoid error

* streamline usage

* updated tests

* updated tests

* further refinement

* fix dumped item for otel

* removed enable_workflow_otel

* final fixes

* final fixes

* updated samples

* removed exporters

* fix tests

* fixed last import'

* fixed devui

python/samples/getting_started/observability/.env.example

@@ -0,0 +1,12 @@
+# Connector environment variables
+# Foundry
+# see ../../../env.example for details
+# OpenAI
+# see ../../../env.example for details
+
+# Otel specific variables
+APPLICATIONINSIGHTS_CONNECTION_STRING="..."
+APPLICATIONINSIGHTS_LIVE_METRICS=true
+OTLP_ENDPOINT="http://localhost:4317/"
+ENABLE_OTEL=true
+ENABLE_SENSITIVE_DATA=true