Adding client type and client name to user agent

[spfink]

Adds the client type (sync/async/unknown) and client name (Apache/NettyNio/UrlConnection/Etc) to the user agent in the form of clientType/clientName (sync/Apache).

Motivation and Context

Allows us to track which clients are being used for a request.

Testing

Updated existing tests
Added interceptor to S3 tests to verify user agent on sync and async client

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist

• I have read the CONTRIBUTING document
• Local run of mvn install succeeds
• My code follows the code style of this project
• My change requires a change to the Javadoc documentation
• I have updated the Javadoc documentation accordingly
• I have read the README document
• I have added tests to cover my changes
• All new and existing tests passed
• A short description of the change has been added to the CHANGELOG
• My change is to implement 1.11 parity feature and I have updated LaunchChangelog

License

• I confirm that this pull request can be released under the Apache 2 license

[millems]

Can we review this format with the metrics team, and make sure we're not exceeding any length limits?

[codecov-io]

Codecov Report

Merging #1218 into master will decrease coverage by <.01%.
The diff coverage is 68%.

@@             Coverage Diff              @@
##             master    #1218      +/-   ##
============================================
- Coverage     59.18%   59.18%   -0.01%     
- Complexity     4659     4660       +1     
============================================
  Files           750      750              
  Lines         23267    23291      +24     
  Branches       1742     1744       +2     
============================================
+ Hits          13771    13784      +13     
- Misses         8800     8810      +10     
- Partials        696      697       +1

Impacted Files	Coverage Δ	Complexity Δ
...e/amazon/awssdk/http/async/SdkAsyncHttpClient.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...ava/software/amazon/awssdk/http/SdkHttpClient.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...k/core/client/builder/SdkDefaultClientBuilder.java	82.4% <0%> (-0.78%)	29 <0> (ø)
...awssdk/http/nio/netty/NettyNioAsyncHttpClient.java	59.83% <0%> (-0.5%)	16 <0> (ø)
...dk/http/urlconnection/UrlConnectionHttpClient.java	82.92% <0%> (-1.03%)	15 <0> (ø)
...re/amazon/awssdk/http/apache/ApacheHttpClient.java	70% <0%> (-0.4%)	27 <0> (ø)
...n/java/software/amazon/awssdk/core/ClientType.java	87.5% <100%> (+1.78%)	2 <0> (ø)	⬇️
...rnal/http/pipeline/stages/ApplyUserAgentStage.java	75.6% <88.23%> (+8.94%)	8 <2> (+3)	⬆️
...nio/netty/internal/OldConnectionReaperHandler.java	81.81% <0%> (-9.1%)	12% <0%> (-1%)
...on/awssdk/services/kinesis/KinesisRetryPolicy.java	85.71% <0%> (ø)	2% <0%> (-1%)	⬇️

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[dagnir]

Code LGTM. Per discussion today, waiting on updating the names.

[spfink]

Updated to io/[sync/async] and http/[Apache/Netty/UrlConnection]

[dagnir]