Add aliases for nodes
Add aliases for nodes

This patch adds a single alias for the secondary_ip property of the
node.

Signed-off-by: Hrvoje Ribicic <be5828fca31f89218048bec4189e30a581aa65da@google.com>
Reviewed-by: Thomas Thrainer <98bdeac947eb8ca18146e9ce7f092788ec242cd1@google.com>

dimara/ganeti,leshchevds/ganeti,andir/ganeti,leshchevds/ganeti,apyrgio/snf-ganeti,andir/ganeti,andir/ganeti,mbakke/ganeti,apyrgio/ganeti,yiannist/ganeti,grnet/snf-ganeti,dimara/ganeti,bitemyapp/ganeti,bitemyapp/ganeti,apyrgio/snf-ganeti,yiannist/ganeti,ganeti/ganeti,onponomarev/ganeti,onponomarev/ganeti,leshchevds/ganeti,mbakke/ganeti,ganeti/ganeti,grnet/snf-ganeti,ganeti/ganeti,mbakke/ganeti,yiannist/ganeti,apyrgio/ganeti,ganeti-github-testing/ganeti-test-1,ganeti-github-testing/ganeti-test-1