fix: improve docker start robustness for acceptance tests

Increase wait intervals to not spam tests with errors on initial start (1s is usually too slow).

Attempt to start service more than once in case it did not come up. Give it more time to start.

Improve error message when startup fails.

ci/scripts/start-bosh.sh

@@ -145,19 +145,23 @@ EOF
   export DOCKER_CERT_PATH=$1
 
   rc=1
-  for i in $(seq 1 100); do
+  for i in $(seq 1 10); do
     echo waiting for docker to come up...
-    sleep 1
+    sleep 10
     set +e
     docker info
     rc=$?
     set -e
     if [ "$rc" -eq "0" ]; then
-        break
+      break
+    else
+      service docker restart
+      sleep 20
     fi
   done
 
   if [ "$rc" -ne "0" ]; then
+    echo "Failed starting docker. Exiting."
     exit 1
   fi