Atest plugin: add fast inupt in run configurations

Bug: 149610460
Test: 1. In atest_plugin folder: ./gradlew :runIde
      2. New a atest run configuration ->
         select the Run on host checkbox:
         current test command will append " --host".
      3. Unselect the Run on host checkbox:
         current test command will delete " --host".
      4. Append " --host" in test command:
         the Run on host checkbox will be selected.
      5. Delete " --host" in test command:
         the Run on host checkbox will be unselected.

Change-Id: Iba1540889a0af523ca64e4981abdd559213ced1b
4 files changed