patch upstream ec2 and eks resource detectors (#91)

**Issue:**
The upstream resource detector package is quite outdated since the last
release of v2.0.1. And there is no plan for a new release for now.

https://github.com/open-telemetry/opentelemetry-python-contrib/commits/main/sdk-extension/opentelemetry-sdk-extension-aws

In our distro we want to consume this particular commit where the
timeout for EC2 and EKS resource detectors were significantly shortened
to 5 seconds. The current timeouts are quite long (1000s and 2000s
respectively) and may cause application fail to start in certain cases.

**Description of changes:**
Using the existing mechanism of temporarily patching the upstream
functions, I'm adding patches for the
[`_aws_http_request`](https://github.com/open-telemetry/opentelemetry-python-contrib/blob/9e57fbad8e6bbc730c43b227d91bf24ed0876835/sdk-extension/opentelemetry-sdk-extension-aws/src/opentelemetry/sdk/extension/aws/resource/ec2.py#L32)
methods in the upstream.

**Testing:**
I couldn't come up with a way of writing unit tests to see if the
patching works since the only change in the patched method is the
timeout. Mocking the `urlopen()` to return a custom response from the
patch didn't work as the mock would return the same for the original
method too.
I did test the change with a sample app where I added a log statement
"Hello from the patch_ec2_aws_http_request" to the patch to ensure it
was being applied.

```
(venv) ➜  adotDjangoTest opentelemetry-instrument --traces_exporter console --metrics_exporter none --service_name my_service python manage.py runserver --noreload 8000
Configuration of configurator not loaded because aws_configurator is set by OTEL_PYTHON_CONFIGURATOR
Hello from the patch_ec2_aws_http_request
AwsEcsResourceDetector failed: Missing ECS_CONTAINER_METADATA_URI therefore process is not on ECS.
Failed to get k8s token: [Errno 2] No such file or directory: '/var/run/secrets/kubernetes.io/serviceaccount/token'
AwsEksResourceDetector failed: [Errno 2] No such file or directory: '/var/run/secrets/kubernetes.io/serviceaccount/token'
AwsEc2ResourceDetector failed: <urlopen error [Errno 65] No route to host>
Performing system checks...

System check identified no issues (0 silenced).

You have 18 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): admin, auth, contenttypes, sessions.
Run 'python manage.py migrate' to apply them.
March 01, 2024 - 17:20:36
Django version 5.0.2, using settings 'adotDjangoTest.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.
```

By submitting this pull request, I confirm that you can use, modify,
copy, and redistribute this contribution, under the terms of your
choice.

Author: srprash

aws-opentelemetry-distro/src/amazon/opentelemetry/distro/_instrumentation_patch.py

@@ -2,7 +2,11 @@
 # SPDX-License-Identifier: Apache-2.0
 # Modifications Copyright The OpenTelemetry Authors. Licensed under the Apache License 2.0 License.
 import importlib
+import ssl
+from urllib.request import Request, urlopen
 
+import opentelemetry.sdk.extension.aws.resource.ec2 as ec2_resource
+import opentelemetry.sdk.extension.aws.resource.eks as eks_resource
 from opentelemetry.instrumentation.botocore.extensions import _KNOWN_EXTENSIONS
 from opentelemetry.instrumentation.botocore.extensions.sqs import _SqsExtension
 from opentelemetry.instrumentation.botocore.extensions.types import _AttributeMapT, _AwsSdkExtension
@@ -20,6 +24,8 @@ def apply_instrumentation_patches() -> None:
     """
     _apply_botocore_instrumentation_patches()
 
+    _apply_resource_detector_patches()
+
 
 def _apply_botocore_instrumentation_patches() -> None:
     """Botocore instrumentation patches
@@ -31,6 +37,38 @@ def _apply_botocore_instrumentation_patches() -> None:
     _apply_botocore_sqs_patch()
 
 
+# The OpenTelemetry Authors code
+def _apply_resource_detector_patches() -> None:
+    """AWS Resource Detector patches for getting the following unreleased change (as of v2.0.1) in the upstream:
+    https://github.com/open-telemetry/opentelemetry-python-contrib/commit/a5ec3f7f55494cb80b4b53c652e31c465b8d5e80
+    """
+
+    def patch_ec2_aws_http_request(method, path, headers):
+        with urlopen(
+            Request("http://169.254.169.254" + path, headers=headers, method=method),
+            timeout=5,
+        ) as response:
+            return response.read().decode("utf-8")
+
+    def patch_eks_aws_http_request(method, path, cred_value):
+        with urlopen(
+            Request(
+                "https://kubernetes.default.svc" + path,
+                headers={"Authorization": cred_value},
+                method=method,
+            ),
+            timeout=5,
+            context=ssl.create_default_context(cafile="/var/run/secrets/kubernetes.io/serviceaccount/ca.crt"),
+        ) as response:
+            return response.read().decode("utf-8")
+
+    ec2_resource._aws_http_request = patch_ec2_aws_http_request
+    eks_resource._aws_http_request = patch_eks_aws_http_request
+
+
+# END The OpenTelemetry Authors code
+
+
 def _apply_botocore_kinesis_patch() -> None:
     """Botocore instrumentation patch for Kinesis