Don't save compressed logs in cts-dev

- also explicitly print log path after test
- use gzip instead of zip: log files saved via testLog will only
  contain one file per call, therefore use of zip format is not
  necessary

Bug: 37217982
Test: cts-tradefed run cts-dev -m CtsGestureTestCases
  And verify that the generated logs are not compressed

Change-Id: Iad0538256ca09653ef7cfd1d52b493ba534fc32f
diff --git a/tools/cts-tradefed/res/config/cts-dev.xml b/tools/cts-tradefed/res/config/cts-dev.xml
index 97c3cdd..4ebda1b 100644
--- a/tools/cts-tradefed/res/config/cts-dev.xml
+++ b/tools/cts-tradefed/res/config/cts-dev.xml
@@ -20,6 +20,7 @@
     <option name="log-level" value="verbose" />
     <option name="skip-preconditions" value="true" />
     <option name="skip-device-info" value="true" />
+    <option name="result-reporter:compress-logs" value="false" />
 
     <option name="plan" value="cts-dev" />
     <option name="compatibility:skip-all-system-status-check" value="true" />