Change redirect url values in config map

[dipak-pawar]

Currently, we are using the following parameters for redirect url:
email.verify.url: https://prod-preview.openshift.io/_home
invitation.accepted.url: https://prod-preview.openshift.io/_home

As a part of fabric8-ui/fabric8-ui#3259 we have modified it's route to make it generic.

email.verify.url: https://openshift.io/_redirects/_verifyEmail
invitation.accepted.url: https://openshift.io/_redirects/_acceptInvitation

Change auth config map to use modified values.

cc @rohitkrai03