otherwise we end up with unmount errors due to busy disk

```
local_testnet_1
Failed to remove container (local_testnet_1): Error response from daemon: Unable to remove filesystem for 74e1104c705d4f21137bbe9e6710f33511948fc04d26475b482d1314fe70d537: remove /var/lib/docker/containers/74e1104c705d4f21137bbe9e6710f33511948fc04d26475b482d1314fe70d537/shm: device or resource busy
local_testnet_2
Failed to remove container (local_testnet_2): Error response from daemon: Unable to remove filesystem for 6f2ec44e01afd85875c1d9958afa957f1623ed9464df2b4fcac06feb8254145e: remove /var/lib/docker/containers/6f2ec44e01afd85875c1d9958afa957f1623ed9464df2b4fcac06feb8254145e/shm: device or resource busy
local_testnet_3
Failed to remove container (local_testnet_3): Error response from daemon: Unable to remove filesystem for 6160c73d45376920d90473a487a07f0e283e383011a0d23050b22cd82ab5d255: remove /var/lib/docker/containers/6160c73d45376920d90473a487a07f0e283e383011a0d23050b22cd82ab5d255/shm: device or resource busy
local_testnet_4
Failed to remove container (local_testnet_4): Error response from daemon: Driver btrfs failed to remove root filesystem c93a30d66ff3710617915a8f6075755ebc45aebf73569420225105cc81003e2f: Failed to destroy btrfs snapshot /var/lib/docker/btrfs/subvolumes for cac56069a3682b6d133e239f479fb82a67c4ccd09b877794d9f440a1125d59d6: operation not permitted

* [15:37:40] stopping rsyslog container
Failed to remove container (rsyslog): Error response from daemon: Driver btrfs failed to remove root filesystem 477287a170a48156e663c55092257064e1f14770d0b6c634a9972893636d9451: Failed to destroy btrfs snapshot /var/lib/docker/btrfs/subvolumes for 76b66d582a478743c099f479bf88eb334ad303ef607f91021dfa58d28c9161eb: operation not permitted
make: *** [test_integrations] Error 1
```

test/p2p/test.sh

@@ -31,6 +31,3 @@ bash test/p2p/fast_sync/test.sh $DOCKER_IMAGE $NETWORK_NAME $N $PROXY_APP
 
 # test killing all peers
 bash test/p2p/kill_all/test.sh $DOCKER_IMAGE $NETWORK_NAME $N 3
-
-# stop the existing testnet and remove local network
-bash test/p2p/local_testnet_stop.sh $NETWORK_NAME $N

test/test.sh

@@ -45,7 +45,3 @@ if [[ $(echo "$BRANCH" | grep "release-") != "" ]]; then
 	# TODO: replace mintnet
 	#bash "$DIR/net/test.sh"
 fi
-
-echo
-echo "* [$(date +"%T")] stopping rsyslog container"
-docker rm -f rsyslog