Description of problem: Support for non-password authentication in HP ILO and VMware fence agents. Additional info: Both HP ILO and VMware REST support use of certificates for authentication. Currently fence-agents do not (except ssh, which allows for keys). RFE for supporting certificates, OATH, tokens, keys, etc. as appropriate for both HP ILO and VMware. HP ILO v2+ appear to support (v5 docs -- http://itdoc.hitachi.co.jp/manuals/ha8000v/hard/Gen10/iLO/880740-004_en.pdf) VMware REST supports (https://developer.vmware.com/apis/vsphere-automation/latest/vcenter/#/) Unclear that VMware SOAP supports; initial indication is that it does not. Allowing for non-password authn would allow for customers to improve security and more easily change authn information.