Update git submodules

* Update platform/tools/asuite from branch 'master'
  to 63300dfe01dd7175a9db6dc25a83aa108b0a7059
  - Atest: check devices only when adb is available
    
    BUG: 218251267
    
    Test: sudo apt remove adb -y
    rm `which -a adb`
    atest-src hello_world_test
    atest-src HelloWorldHostTest
    
    Change-Id: I0d741b2d7e453f91b67a01075cf846e3f67fd2cc