lisa_shell: fix lisa-update failure
Created by: Leo-Yan
In patch 3f5553ff "lisa_shell: teach lisa-update to update itself" it search "ARM-software/lisa.git" to generate "remote_name".
But in some case, for example clone LISA's repo with below command: git clone https://github.com/ARM-software/lisa; so finally it cannot find out "ARM-software/lisa.git" due without suffix ".git".
To compatible both cloning methods, change to search "ARM-software/lisa".
Signed-off-by: Leo Yan leo.yan@linaro.org