changes to lab001-control-node

a ssh to an ssh
changed control to controller node
Added the before OpenStack
vSwitch spelling corrected
changed plural on add
added space in volumegroup
don't needs apostrophe
changed like this to following steps
added :
added space after .
changed to do not and added perform

Change-Id: I4c830b03a7d955a9f1948876cc31cac64c7dcf4d
Merge "changes to lab001-control-node"