Add framework and hostonly tests to luci presubmit. (#63245)

Bugs:
    https://github.com/flutter/flutter/issues/63241
    https://github.com/flutter/flutter/issues/63242

dev/try_builders.json

@@ -5,6 +5,16 @@
          "repo":"flutter",
          "taskName":"linux_bot"
       },
+      {
+         "name":"Linux framework_tests",
+         "repo":"flutter",
+         "taskName":"linux_framework_tests"
+      },
+      {
+         "name":"Linux hostonly_devicelab_tests",
+         "repo":"flutter",
+         "taskName":"hostonly_devicelab_tests"
+      },
       {
          "name":"Windows",
          "repo":"flutter",