Remove suds requirement
Remove suds requirement

There are no uses of suds in this module, and
suds is meanwhile unmaintained and has pending
security issues, so better remove references to it.

Change-Id: I532f597724ccdff91769e167342545d0b53c54ef

rackerlabs/ironic,naterh/ironic,faizan-barmawer/openstack_ironic,rdo-management/ironic,varunarya10/ironic,citrix-openstack-build/ironic,SauloAislan/ironic,pshchelo/ironic,bacaldwell/ironic,supermari0/ironic,redhat-openstack/ironic,ionutbalutoiu/ironic,devananda/ironic,pshchelo/ironic,dims/ironic,NaohiroTamura/ironic,hpproliant/ironic,naototty/vagrant-lxc-ironic,bacaldwell/ironic,openstack/ironic,openstack/ironic,JioCloud/ironic,ionutbalutoiu/ironic,NaohiroTamura/ironic,Tehsmash/ironic,SauloAislan/ironic,Tan0/ironic,dims/ironic,naototty/vagrant-lxc-ironic,debayanray/ironic_backup,froyobin/ironic,citrix-openstack-build/ironic,ramineni/myironic