Adds key creation to the lint check to ensure that keys exist
Adds key creation to the lint check to ensure that keys exist

This commit adds the `ssh_key_create` function to ensure that the key exists
on the host that the lint check is being run on. This allows the lint check
to continue on a node where it does not already have root ssh keys.

Change-Id: I64bed9e7aede1025b2c3f375ce1054696457be3a
Closes-Bug: #1424733

stevelle/os-ansible-deployment,BjoernT/os-ansible-deployment,wenhuizhang/os-ansible-deployment,sti-jans/openstack-ansible,stevelle/openstack-ansible,mrda/openstack-ansible,dhanunjaya/os-ansible-deployment,dhanunjaya/os-ansible-deployment,yanyao/newton,stevelle/os-ansible-deployment,miguelgrinberg/os-ansible-deployment,yanyao/openstack-deployment,os-cloud/os-ansible-deployment,weezer/openstack-ansible,stevelle/openstack-ansible,antonym/openstack-ansible,mrda/openstack-ansible,jpmontez/os-ansible-deployment,jpmontez/os-ansible-deployment,openstack/openstack-ansible,jpmontez/openstack-ansible,antonym/openstack-ansible,antonym/openstack-ansible,yanyao/openstack-deployment-liberty,pombredanne/os-ansible-deployment,metral/os-ansible-deployment,major/openstack-ansible,BjoernT/openstack-ansible,achekunov/openstack-ansible,robb-romans/openstack-ansible,open-switch/infra_openstack-ansible,weezer/openstack-ansible,wenhuizhang/os-ansible-deployment,openstack/openstack-ansible,yanyao/newton,robb-romans/openstack-ansible,bunchc/openstack-ansible,jpmontez/openstack-ansible,sigmavirus24/openstack-ansible,shane-c/openstack-ansible,shane-c/openstack-ansible,yanyao/openstack-deployment,pombredanne/os-ansible-deployment,BjoernT/openstack-ansible,metral/os-ansible-deployment,sacharya/os-ansible-deployment,mancdaz/openstack-ansible,d34dh0r53/os-ansible-deployment,open-switch/infra_openstack-ansible,cloudnull/os-ansible-deployment,sacharya/os-ansible-deployment,yanyao/openstack-deployment,achekunov/openstack-ansible,git-harry/os-ansible-deployment,yanyao/openstack-deployment-liberty,VaneCloud/openstack-ansible,cfarquhar/openstack-ansible,d34dh0r53/os-ansible-deployment,os-cloud/os-ansible-deployment,jpmontez/openstack-ansible,shane-c/openstack-ansible,bunchc/openstack-ansible,achekunov/openstack-ansible,sigmavirus24/os-ansible-deployment,VaneCloud/openstack-ansible,VaneCloud/openstack-ansible,major/os-ansible-deployment,mrda/openstack-ansible,major/openstack-ansible,Logan2211/openstack-ansible,mancdaz/openstack-ansible,yanyao/openstack-ansible,sigmavirus24/openstack-ansible,stackforge/os-ansible-deployment,yanyao/openstack-ansible,manuelfelipe/openstack-ansible,stackforge/os-ansible-deployment,yanyao/openstack-deployment-liberty,jpmontez/os-ansible-deployment,AlphaStaxLLC/os-ansible-deployment,miguelgrinberg/os-ansible-deployment,manuelfelipe/openstack-ansible,BjoernT/os-ansible-deployment,AlphaStaxLLC/os-ansible-deployment,pombredanne/os-ansible-deployment,sigmavirus24/os-ansible-deployment,sti-jans/openstack-ansible,major/os-ansible-deployment,git-harry/os-ansible-deployment,sti-jans/openstack-ansible,manuelfelipe/openstack-ansible,cfarquhar/openstack-ansible,yanyao/openstack-deployment,AlphaStaxLLC/os-ansible-deployment,BjoernT/os-ansible-deployment,open-switch/infra_openstack-ansible,Logan2211/openstack-ansible,git-harry/os-ansible-deployment,cloudnull/os-ansible-deployment