Add the keywords of environment setup/clearup for the device policy/WLAN scheduler test suite
Merge from Perforce
Merge branch 'dev'
1. Move the keyword to a new file.
2. Add the keyword to set-up/clear-up the environment in the UTP test suite.
Merge from Perforce
Merge from Perforce
Add the force-DHCP test suite
Move some keywords to a common file
Fix the script issue in the force DHCP test suite
Merge from Perforce
Merge branch 'dev'
Merge from Perforce
Add the L2 ACL test suite