Fix CloudFront Distribution OriginSSL support

[stevendborrelli]

Description of your changes

From #915

Creating a distribution with a custom origin was stuck infinitely reconciling every second. After looking into this, it was due to a naming difference between provider-aws and the aws sdk where for provider-aws the variable was OriginSSLProtocols and for aws-sdk it was OriginSslProtocols.

Fixes #894.

I have:

• Read and followed Crossplane's [contribution process].
• Run make reviewable test to ensure this PR is ready for review.

How has this code been tested

Tested with the following code from #894

# Distribution will not be deleted unless you mark the distribution disabled via
# spec.distributionConfig.enabled.
apiVersion: cloudfront.aws.crossplane.io/v1alpha1
kind: Distribution
metadata:
  name: example2-distribution
spec:
  forProvider:
    region: us-east-1
    distributionConfig:
      enabled: true
      comment: Example CloudFront Distribution
      origins:
        items:
          - domainName: exampledomain.example.com
            id: example
            originPath: "/helloworld"
            customHeaders:
              items:
                - headerName: "test"
                  headerValue: "test"
              quantity: 1
            customOriginConfig:
              httpPort: 80
              originProtocolPolicy: "http-only"
              originReadTimeout: 10
              originKeepaliveTimeout: 5
              httpSPort: 443
              originSSLProtocols:
                items:
                  - TLSv1
                quantity: 1
      defaultCacheBehavior:
        targetOriginID: example
        viewerProtocolPolicy: allow-all
        minTTL: 0
        forwardedValues:
          cookies:
            forward: none
          queryString: false
  providerConfigRef:
    name: aws-provider

[muvaf]

I wasn't aware of that option. Thanks @stevendborrelli !

[haarchri]

@stevendborrelli is this really with upper "S" httpSPort ?

[stevendborrelli]

There are some case issues in the acc-generator. I am reviewing and will submit a PR to fix.

[negz]

/backport

[github-actions]

Successfully created backport PR #923 for release-0.20.

[github-actions]

Backport failed for release-0.19, because it was unable to cherry-pick the commit(s).

Please cherry-pick the changes locally.

git fetch origin release-0.19
git worktree add -d .worktree/backport-922-to-release-0.19 origin/release-0.19
cd .worktree/backport-922-to-release-0.19
git checkout -b backport-922-to-release-0.19
ancref=$(git merge-base 4e81878a6050dbd219c975955a39a7463d0f375b c41d3cfb8fdfcba4fa4ff3cd49a8c06c87059ad6)
git cherry-pick -x $ancref..c41d3cfb8fdfcba4fa4ff3cd49a8c06c87059ad6