Init Config for test framework

[zijun726911]

As we recently changed the method to read Config file in
#264

We need to explicitly do config.ConfigInit() when create the test framework

Test

• Did the fmt.Println("config.Region: ", config.Region), it could read the correct config.Region
• make e2etest all can pass

• [253.448 seconds]
------------------------------

Ran 3 of 3 Specs in 769.177 seconds
SUCCESS! -- 3 Passed | 0 Failed | 0 Pending | 0 Skipped
--- PASS: TestIntegration (769.41s)
PASS
ok  	github.com/aws/aws-application-networking-k8s/test/suites/integration	770.031s

[coveralls]

Pull Request Test Coverage Report for Build 5224226412

• 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 32.439%

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Totals
Change from base Build 5160371473:	0.0%
Covered Lines:	3275
Relevant Lines:	10096

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💛 - Coveralls

[zmingxi]

doesn't it work before without config.ConfigInit?

[zmingxi]

Discussed offline. Controller and e2etest frame work are in two different processes.