Use a shorter timeout for AWS EC2 metadata requests

Fix #1088 

According to the docs, the value for `timeout` is in seconds: https://docs.python.org/3/library/urllib.request.html#urllib.request.urlopen. 1000 seconds seems slow and in some cases can block the startup of the program being instrumented (see #1088 as an example), because the request will hang indefinitely in non-AWS environments. Using a much shorter 1 second timeout seems like a reasonable workaround for this.

Author: jemisonf

sdk-extension/opentelemetry-sdk-extension-aws/src/opentelemetry/sdk/extension/aws/resource/ec2.py

@@ -34,7 +34,7 @@ def _aws_http_request(method, path, headers):
         Request(
             "http://169.254.169.254" + path, headers=headers, method=method
         ),
-        timeout=1000,
+        timeout=1,
     ) as response:
         return response.read().decode("utf-8")