test-network: Try a default start time of 120 seconds

For Travis and other slow or loaded machines.

TODO: update the README with the new default.
(Conflicts with 30059.)

Bugfix for 30064.

tools/test-network-impl.sh

@@ -14,7 +14,7 @@ fi
 # Even the fastest chutney networks take 5-10 seconds for their first consensus
 # and then 10 seconds after that for relays to bootstrap and upload descriptors
 # But chutney defaults to running a bit more slowly, so it is more reliable.
-export CHUTNEY_START_TIME=${CHUTNEY_START_TIME:-60}
+export CHUTNEY_START_TIME=${CHUTNEY_START_TIME:-120}
 export CHUTNEY_BOOTSTRAP_TIME=${CHUTNEY_BOOTSTRAP_TIME:-60}
 export CHUTNEY_STOP_TIME=${CHUTNEY_STOP_TIME:-0}