chore: add e2e and docs for python musl

Author: ilyamochalov

README.md

@@ -250,8 +250,13 @@ instrumentation.opentelemetry.io/inject-nodejs: "true"
 ```
 
 Python:
+Python auto-instrumentation also honors an annotation that will be used to set Python runtime C library implementation.
+Currently, two C library implementations are supported: `linux-x64` and `linux-musl-x64`.
+By default `linux-x64` is used.
 ```bash
-instrumentation.opentelemetry.io/inject-python: "true"
+instrumentation.opentelemetry.io/inject-: "true"
+instrumentation.opentelemetry.io/otel-python-auto-runtime: "linux-x64" # for Linux glibc based images, this is default value and can be omitted
+instrumentation.opentelemetry.io/otel-python-auto-runtime: "linux-musl-x64"  # for Linux musl based images
 ```
 
 .NET:

tests/e2e-instrumentation/instrumentation-python/01-assert.yaml

@@ -4,6 +4,7 @@ metadata:
   annotations:
     sidecar.opentelemetry.io/inject: "true"
     instrumentation.opentelemetry.io/inject-python: "true"
+    instrumentation.opentelemetry.io/otel-python-auto-runtime: "linux-musl-x64"
   labels:
     app: my-pod-with-sidecar
 spec:
@@ -17,7 +18,7 @@ spec:
     - name: OTEL_EXPORTER_OTLP_ENDPOINT
       value: http://localhost:4318
     - name: PYTHONPATH
-      value: "/otel-auto-instrumentation-python/opentelemetry/instrumentation/auto_instrumentation:/otel-auto-instrumentation-python"
+      value: "/otel-auto-instrumentation-python/linux-musl-x64/opentelemetry/instrumentation/auto_instrumentation:/otel-auto-instrumentation-python"
     - name: OTEL_EXPORTER_OTLP_TRACES_PROTOCOL
       value: http/protobuf
     - name: OTEL_METRICS_EXPORTER

tests/e2e-instrumentation/instrumentation-python/01-install-app.yaml

@@ -14,6 +14,7 @@ spec:
       annotations:
         sidecar.opentelemetry.io/inject: "true"
         instrumentation.opentelemetry.io/inject-python: "true"
+        instrumentation.opentelemetry.io/otel-python-auto-runtime: "linux-musl-x64"
     spec:
       securityContext:
         runAsUser: 1000