Fix oauth htpasswd template for integration test

[xiaocwan]

Now since 'challenge' and 'login' are removed from identityProviders, update the test template for integration test.

oauthConfig:
  ...
  identityProviders:
  - name: "my_ldap_provider" 
    challenge: true 
    login: true

@spadgett Could you help to review please? Thanks!

[openshift-ci-robot]

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[openshift-ci-robot]

@xiaocwan: The following tests failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
ci/prow/e2e-aws-console	4f78bbc	link	/test e2e-aws-console
ci/prow/e2e-aws	4f78bbc	link	/test e2e-aws
ci/prow/e2e-aws-console-olm	4f78bbc	link	/test e2e-aws-console-olm
ci/prow/images	4f78bbc	link	/test images

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[xiaocwan]

Duplicated to #1342, closing this one.