[Devstack]Add ability to enable shellinabox SSL certificate
[Devstack]Add ability to enable shellinabox SSL certificate

Change-Id: Ib6781fb7241fba7bd52bf6c47fd1851d569ebf8a
Closes-Bug: #1552045

bacaldwell/ironic,NaohiroTamura/ironic,pshchelo/ironic,SauloAislan/ironic,devananda/ironic,NaohiroTamura/ironic,pshchelo/ironic,openstack/ironic,SauloAislan/ironic,openstack/ironic,bacaldwell/ironic