opera adapter fix2

opera adapter fix2

* opera_adapter need sshpass which may cause deploy
fail
* compass log redirection is the last command which
always return 0 and thus cover deploy error

1. add installation of sshpass in prepare.sh
2. echo a string at the end of deploy/launch.sh into
log file to judge if deployment is complete
3. fix typing error in util/check_valid.py

Change-Id: Ic4bca50b2c316bf46cace45b9b3317ef9452a0ba
Signed-off-by: Harry Huang <huangxiangyu5@huawei.com>