Compare query strings based on set of components in ec2 integration tests

[ysaito1001]

Motivation and Context

Avoids comparing raw strings in ec2 integration tests

Description

With a updated service model for ec2, we have run into the following test failures in its integration tests,

----- paginators_handle_unset_tokens stdout ----
body did not match. left=expected, right=actual
Diff < left / right > :
<Action=DescribeSpotPriceHistory&Version=2016-11-15&·[1;48;5;52;31mAvailabilityZone=eu-north-1a&InstanceType.1=g5.48xlarge&ProductDescription.1=Linux%2FUNIX
>Action=DescribeSpotPriceHistory&Version=2016-11-15&InstanceType.1=g5.48xlarge&ProductDescription.1=Linux%2FUNIX·[1;48;5;22;32m&AvailabilityZone=eu-north-1a
 
thread 'paginators_handle_unset_tokens' panicked at sdk/aws-smithy-runtime/src/client/http/test_util/replay.rs:98:43:

---- paginators_handle_empty_tokens stdout ----
body did not match. left=expected, right=actual
Diff < left / right > :
<Action=DescribeSpotPriceHistory&Version=2016-11-15&·[1;48;5;52;31mAvailabilityZone=eu-north-1a&InstanceType.1=g5.48xlarge&ProductDescription.1=Linux%2FUNIX
>Action=DescribeSpotPriceHistory&Version=2016-11-15&InstanceType.1=g5.48xlarge&ProductDescription.1=Linux%2FUNIX·[1;48;5;22;32m&AvailabilityZone=eu-north-1a

thread 'paginators_handle_empty_tokens' panicked at sdk/aws-smithy-runtime/src/client/http/test_util/replay.rs:98:43:

We don't know exactly how a generated ec2 SDK built up query strings in a different order from what it is today, but whatever the root cause is, the ultimate fix remains the same. Comparing raw query strings can be unreliable, so this PR will fix that by comparing sets of strings derived from query strings.

Testing

Ran the edited tests against the generated ec2 SDK in question and it passed (without this PR, it did fail).

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[github-actions]

A new generated diff is ready to view.

• AWS SDK (ignoring whitespace)
• No codegen difference in the Client Test
• No codegen difference in the Server Test
• No codegen difference in the Server Test Python
• No codegen difference in the Server Test Typescript

A new doc preview is ready to view.

[landonxjames]

One comment, not a blocker

[github-actions]

A new generated diff is ready to view.

• AWS SDK (ignoring whitespace)
• No codegen difference in the Client Test
• No codegen difference in the Server Test
• No codegen difference in the Server Test Python
• No codegen difference in the Server Test Typescript

A new doc preview is ready to view.