add ForceSSLRedirect ingress annotation

[pwillie]

This PR addresses the HTTPS redirect referenced in #314. Approach is to use an ingress annotation ingress.kubernetes.io/force-ssl-redirect to enable this feature.

fixes #314

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[k8s-reviewable]

This change is 

[aledbf]

@pwillie please sign the CLA

[pwillie]

@aledbf done.

[coveralls]

Coverage increased (+0.02%) to 45.375% when pulling 1a72b3f on pwillie:forcesslredirect into 0b48d3b on kubernetes:master.

[aledbf]

/lgtm

[aledbf]

@pwillie thanks!