ci : don't wait twice for fly login to exit

we were setting a timeout and interval in the eventually
but the `Wait()` uses the default 1sec timeout

Signed-off-by: Topher Bullock <cbullock@pivotal.io>

docker-compose.yml

@@ -41,7 +41,7 @@ services:
     environment:
     - CONCOURSE_LOG_LEVEL=debug
     - CONCOURSE_TSA_HOST=web:2222
-    - CONCOURSE_EPHEMERAL=true
+    - CONCOURSE_EPHEMERAL=${CONCOURSE_EPHEMERAL:-true}
 
       # avoid using loopbacks
     - CONCOURSE_BAGGAGECLAIM_DRIVER=overlay

topgun/fly.go

@@ -32,7 +32,7 @@ func (f *Fly) Login(user, password, endpoint string) {
 			"-c", endpoint,
 			"-u", user,
 			"-p", password,
-		).Wait()
+		)
 	}, 2*time.Minute, 10*time.Second).
 		Should(gexec.Exit(0), "Fly should have been able to log in")
 }