Add SSO to XDMoD image build

The steps for adding SSO to XDMoD are documented in https://gitlab.rc.uab.edu/krish94/xdmod-deploy.git. We need to put them in ansible role and add it to xdmod image cloud image build.

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marked this issue as related to #285 (closed)

Created a new issue #323 (closed) Closing this

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