Lower the tool update interval to 1 minute

Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com>

runner/common/pool.go

@@ -25,9 +25,10 @@ const (
 	PoolConsilitationInterval = 5 * time.Second
 	PoolReapTimeoutInterval   = 5 * time.Minute
 	// Temporary tools download token is valid for 1 hour by default.
-	// Set this to 15 minutes. This should allow enough time even on slow
-	// clouds for the instance to spin up, download the tools and join gh.
-	PoolToolUpdateInterval = 15 * time.Minute
+	// There is no point in making an API call to get available tools, for every runner
+	// we spin up. We cache the tools for one minute. This should save us a lot of API calls
+	// in cases where we have a lot of runners spin up at the same time.
+	PoolToolUpdateInterval = 1 * time.Minute
 
 	// BackoffTimer is the time we wait before attempting to make another request
 	// to the github API.