optimize wait times for how long it takes Amazon to launch a server

test benchmarks:

    small server
        launched in us-east-1
            69 seconds with a minimal backup
            40 seconds without a backup

        launched in eu-west-1
            53 seconds

    micro server
        launched in us-east-1
            47 seconds without a backup
            66 with a minimal backup

cloudtask/_hub.py

@@ -20,7 +20,7 @@ class Hub:
     class Error(Exception):
         pass
 
-    def __init__(self, apikey, wait_first=5, wait_status=5, wait_retry=5, retries=2):
+    def __init__(self, apikey, wait_first=30, wait_status=10, wait_retry=5, retries=2):
 
         self.apikey = apikey
         self.wait_first = wait_first