Add missing opentech-sjc-common group_vars
Add missing opentech-sjc-common group_vars

This is required to set elk apache vhosts correctly but was mistakenly
left out of the last commit.

Signed-off-by: Adam Gandelman <aec3dfbec6da97399a077a99827a550fc2958d51@ubuntu.com>

jamielennox/hoist,SpamapS/hoist,BonnyCI/hoist,jamielennox/hoist,BonnyCI/hoist,SpamapS/hoist