Add support for AWS SDK v4.0 (#6929)

## Summary of changes

Adds support for AWS SDK 4.0, [released on 28th
Apr](https://aws.amazon.com/blogs/developer/general-availability-of-aws-sdk-for-net-v4-0/)

## Reason for change

We want to support the latest versions of the SDK

## Implementation details

- Ran a "baseline" bump of package versions for simplicity, and then
later removed the commit from the stack.
- Bumped the tested versions of AWS.
- Bumped the instrumented versions of AWS.
- Added scrubbing for http-client-handler vs socket-handler.
- This is an implementation detail difference in v4 which doesn't really
matter in the snapshots so just scrubbed it where required
- Added additional instrumentation to grab the "real" URL that the HTTP
Client sends.
- The value added by the existing "core pipeline" instrumentation
contained the wrong value for the S3 tests, it contained a value
`/{Key+}` instead of the expected `/sample.txt`.
- This looks like a core change to the library, to allow "parameterized"
URLs.
- Rather than trying to reproduce the logic it uses in the existing
endpoint, the additional instrumentation grabs the "real" URL that's
used, and uses that preferentially
- I haven't checked to see if we could backport this to earlier SDK
versions too, but seems like low value to do so with risks of breakage

## Test coverage

Ran an [all-TFMs
test](https://dev.azure.com/datadoghq/dd-trace-dotnet/_build/results?buildId=177194&view=results)
to make sure everything looks ok, and looks fine in general

## Other details

Stacked on 
- #6922

because the minimum .NET Framework version was bumped to `net472`

Author: andrewlock

tracer/build/PackageVersionsGeneratorDefinitions.json

@@ -1,14 +1,32 @@
 [
+  {
+    "IntegrationName": "AwsSdk",
+    "SampleProjectName": "Samples.AWS.DynamoDBv2",
+    "NugetPackageSearchName": "AWSSDK.Core",
+    "MinVersion": "3.0.0",
+    "MaxVersionExclusive": "5.0.0",
+    "SpecificVersions": [
+      "3.1.*",
+      "3.3.*",
+      "3.*.*",
+      "4.*.*"
+    ],
+    "VersionConditions": [{
+      "MaxVersionExclusive": "3.3.0",
+      "IncludeOnlyTargetFrameworks": ["net48"]
+    }]
+  },
   {
     "IntegrationName": "AwsDynamoDb",
     "SampleProjectName": "Samples.AWS.DynamoDBv2",
     "NugetPackageSearchName": "AWSSDK.DynamoDBv2",
     "MinVersion": "3.0.0",
-    "MaxVersionExclusive": "3.8.0",
+    "MaxVersionExclusive": "5.0.0",
     "SpecificVersions": [
       "3.1.*",
       "3.3.*",
-      "3.*.*"
+      "3.*.*",
+      "4.*.*"
     ],
     "VersionConditions": [{
       "MaxVersionExclusive": "3.3.0",
@@ -20,11 +38,12 @@
     "SampleProjectName": "Samples.AWS.Kinesis",
     "NugetPackageSearchName": "AWSSDK.Kinesis",
     "MinVersion": "3.0.0",
-    "MaxVersionExclusive": "3.8.0",
+    "MaxVersionExclusive": "5.0.0",
     "SpecificVersions": [
       "3.1.*",
       "3.3.*",
-      "3.*.*"
+      "3.*.*",
+      "4.*.*"
     ],
     "VersionConditions": [{
       "MaxVersionExclusive": "3.3.0",
@@ -50,11 +69,12 @@
     "SampleProjectName": "Samples.AWS.SQS",
     "NugetPackageSearchName": "AWSSDK.SQS",
     "MinVersion": "3.0.0",
-    "MaxVersionExclusive": "3.8.0",
+    "MaxVersionExclusive": "5.0.0",
     "SpecificVersions": [
       "3.1.*",
       "3.3.*",
-      "3.*.*"
+      "3.*.*",
+      "4.*.*"
     ],
     "VersionConditions": [{
       "MaxVersionExclusive": "3.3.0",
@@ -66,11 +86,12 @@
     "SampleProjectName": "Samples.AWS.SimpleNotificationService",
     "NugetPackageSearchName": "AWSSDK.SimpleNotificationService",
     "MinVersion": "3.0.0",
-    "MaxVersionExclusive": "3.8.0",
+    "MaxVersionExclusive": "5.0.0",
     "SpecificVersions": [
       "3.1.*",
       "3.3.*",
-      "3.*.*"
+      "3.*.*",
+      "4.*.*"
     ],
     "VersionConditions": [
       {
@@ -84,11 +105,12 @@
     "SampleProjectName": "Samples.AWS.EventBridge",
     "NugetPackageSearchName": "AWSSDK.EventBridge",
     "MinVersion": "3.3.100",
-    "MaxVersionExclusive": "4.0.0",
+    "MaxVersionExclusive": "5.0.0",
     "SpecificVersions": [
       "3.3.*",
       "3.5.*",
-      "3.7.*"
+      "3.7.*",
+      "4.*.*"
     ],
     "VersionConditions": [
       {
@@ -102,11 +124,12 @@
     "SampleProjectName": "Samples.AWS.S3",
     "NugetPackageSearchName": "AWSSDK.S3",
     "MinVersion": "3.3.0",
-    "MaxVersionExclusive": "4.0.0",
+    "MaxVersionExclusive": "5.0.0",
     "SpecificVersions": [
       "3.3.*",
       "3.5.*",
-      "3.7.*"
+      "3.7.*",
+      "4.*.*"
     ],
     "VersionConditions": [
       {
@@ -120,11 +143,12 @@
     "SampleProjectName": "Samples.AWS.StepFunctions",
     "NugetPackageSearchName": "AWSSDK.StepFunctions",
     "MinVersion": "3.3.0",
-    "MaxVersionExclusive": "4.0.0",
+    "MaxVersionExclusive": "5.0.0",
     "SpecificVersions": [
       "3.3.*",
       "3.5.*",
-      "3.7.*"
+      "3.7.*",
+      "4.*.*"
     ],
     "VersionConditions": [
       {