fix add units deploy

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>
Merge service fix call

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>
return false for non existent services

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>
service api returns a empty dict on non existent services, test for that

Signed-off-by: Adam Stokes <adam.stokes@ubuntu.com>
Merge pull request #47 from battlemidget/patch-fix-add-charm

Patch fix add charm