gatekeeper:Fix mirror configuration for kernel.lge.com

One mirror repo for 'ssh://kernel.lge.com', 'git://kernel.lge.com' is used
But if you want to add two or more repos for one mirror repo, you
have to use '--add' option
]
developer: Fix mis-spelled wall address
Merge pull request #2 from lge-tv-scm/fix/mirror_path

Fix/mirror path:wall,kernel.lge.com