travis: Print test log file from distcheck as well

Since we started using `make distcheck` in travis, the part that's printing the
tests/test-suite.log file is rather pointless.  Let's check for both known
locations (keeping the previous one there on purpose) so that the output is
usable again.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>
Reviewed-by: NDaniel P. Berrangé <berrange@redhat.com>

.travis.yml

@@ -118,8 +118,11 @@ script:
 
 after_failure:
   - echo '============================================================================'
-  - 'if [ -f $(pwd)/tests/test-suite.log ]; then
+  - 'ver=$(sed -n "s/AC_INIT(\[libvirt\], \[\([0-9.]*\)\],.*/\1/p" configure.ac);
+    if [ -f $(pwd)/tests/test-suite.log ]; then
         cat $(pwd)/tests/test-suite.log;
+    elif [ -f libvirt-$ver/_build/tests/test-suite.log ]; then
+        cat libvirt-$ver/_build/tests/test-suite.log;
     else
         echo "=== NO LOG FILE FOUND ===";
     fi'