Add option to allow creating namespaced K8S resources and update path based to use non-default gateway

[liwenwu-amazon]

What type of PR is this?

feature
Which issue does this PR fix:
enhance e2e test framework to allow non-default namespaced gateway and httproute

What does this PR do / Why do we need it:

If an issue # is not available please add repro steps and logs from aws-gateway-controller showing the issue:

Testing done on this change:

Ran 2 of 2 Specs in 583.398 seconds
SUCCESS! -- 2 Passed | 0 Failed | 0 Pending | 0 Skipped
--- PASS: TestIntegration (584.30s)
PASS
ok  	github.com/aws/aws-application-networking-k8s/test/suites/integration	584.329s

Automation added to e2e:

Will this PR introduce any new dependencies?:

Will this break upgrades or downgrades. Has updating a running cluster been tested?:

Does this PR introduce any user-facing change?:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[coveralls]

Pull Request Test Coverage Report for Build 4813571657

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 31.824%

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Totals
Change from base Build 4812786807:	0.0%
Covered Lines:	3169
Relevant Lines:	9958

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 4814222172

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 31.824%

---

Totals
Change from base Build 4812786807:	0.0%
Covered Lines:	3169
Relevant Lines:	9958

---

💛 - Coveralls

[zijun726911]

LGTM