saml_aws_creds.py: permit callers to pass additionall ssh options
saml_aws_creds.py: permit callers to pass additionall ssh options

This will permit users to specify alternate private key files, etc.

blrm/openshift-tools,drewandersonnz/openshift-tools,joelsmith/openshift-tools,openshift/openshift-tools,blrm/openshift-tools,openshift/openshift-tools,jupierce/openshift-tools,drewandersonnz/openshift-tools,rhdedgar/openshift-tools,blrm/openshift-tools,tiwillia/openshift-tools,rhdedgar/openshift-tools,andrewklau/openshift-tools,ivanhorvath/openshift-tools,joelddiaz/openshift-tools,themurph/openshift-tools,drewandersonnz/openshift-tools,openshift/openshift-tools,tiwillia/openshift-tools,drewandersonnz/openshift-tools,blrm/openshift-tools,joelddiaz/openshift-tools,themurph/openshift-tools,twiest/openshift-tools,openshift/openshift-tools,rhdedgar/openshift-tools,themurph/openshift-tools,joelddiaz/openshift-tools,joelsmith/openshift-tools,rhdedgar/openshift-tools,joelddiaz/openshift-tools,themurph/openshift-tools,rhdedgar/openshift-tools,openshift/openshift-tools,ivanhorvath/openshift-tools,blrm/openshift-tools,ivanhorvath/openshift-tools,jupierce/openshift-tools,tiwillia/openshift-tools,tiwillia/openshift-tools,joelddiaz/openshift-tools,twiest/openshift-tools,ivanhorvath/openshift-tools,andrewklau/openshift-tools,joelsmith/openshift-tools,twiest/openshift-tools,blrm/openshift-tools,drewandersonnz/openshift-tools,openshift/openshift-tools,jupierce/openshift-tools,twiest/openshift-tools,ivanhorvath/openshift-tools,twiest/openshift-tools,jupierce/openshift-tools,ivanhorvath/openshift-tools,themurph/openshift-tools,andrewklau/openshift-tools,andrewklau/openshift-tools,joelsmith/openshift-tools,drewandersonnz/openshift-tools,tiwillia/openshift-tools,joelddiaz/openshift-tools,jupierce/openshift-tools,twiest/openshift-tools,andrewklau/openshift-tools