Disable Apache normalization

[varunnvs92]

• Disable Apache normalization to handle breaking change introduced in v4.5.7
• Update httpcomponents.httpclient.version to 4.5.9

See aws/aws-sdk-java#1919 for more details.

[codecov-io]

Codecov Report

Merging #1224 into master will decrease coverage by 11.12%.
The diff coverage is 87.5%.

@@              Coverage Diff              @@
##             master    #1224       +/-   ##
=============================================
- Coverage     70.14%   59.02%   -11.13%     
- Complexity      188     4632     +4444     
=============================================
  Files           776      747       -29     
  Lines         24122    23191      -931     
  Branches       1799     1737       -62     
=============================================
- Hits          16920    13688     -3232     
- Misses         6420     8808     +2388     
+ Partials        782      695       -87

Flag	Coverage Δ	Complexity Δ
#unittests	?	?

Impacted Files	Coverage Δ	Complexity Δ
...apache/internal/impl/ApacheHttpRequestFactory.java	71.42% <100%> (-18.82%)	13 <0> (+13)
...awssdk/http/apache/internal/utils/ApacheUtils.java	36.66% <85.71%> (+14.92%)	4 <1> (+4)	⬆️
...protocols/json/DefaultJsonContentTypeResolver.java	0% <0%> (-100%)	0% <0%> (ø)
...awssdk/protocols/json/AwsJsonProtocolMetadata.java	0% <0%> (-100%)	0% <0%> (ø)
...ftware/amazon/awssdk/core/traits/PayloadTrait.java	0% <0%> (-100%)	0% <0%> (ø)
...tware/amazon/awssdk/core/traits/LocationTrait.java	0% <0%> (-100%)	0% <0%> (ø)
...ventstream/EventStreamTaggedUnionPojoSupplier.java	0% <0%> (-100%)	0% <0%> (ø)
.../awssdk/protocols/json/AwsJsonProtocolFactory.java	0% <0%> (-100%)	0% <0%> (ø)
...e/amazon/awssdk/awscore/AwsExecutionAttribute.java	0% <0%> (-100%)	0% <0%> (ø)
...gions/providers/DefaultAwsRegionProviderChain.java	0% <0%> (-100%)	0% <0%> (ø)
... and 293 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c93f85d...2553e89. Read the comment docs.

[zoewangg]

Integ tests and stability tests passed.

[varunnvs92]

Reviewed the changes pushed by @zoewangg . They lgtm.