tests(*) increase timeouts for helper clients

Travis CI seems to be causing up to 30 second delays when DNS fails
to resolve (which is a situation we trigger deliberately in our
tests, and used to be quick).

We increase maximum timeouts to account for that.

spec/02-integration/05-proxy/10-balancer_spec.lua

@@ -334,7 +334,7 @@ end
 
 
 local function poll_wait_health(upstream_id, host, port, value, admin_port)
-  local hard_timeout = ngx.now() + 10
+  local hard_timeout = ngx.now() + 70
   while ngx.now() < hard_timeout do
     local health = get_upstream_health(upstream_id, admin_port)
     if health then

spec/helpers.lua

@@ -476,7 +476,7 @@ local function proxy_client(timeout)
   local proxy_ip = get_proxy_ip(false)
   local proxy_port = get_proxy_port(false)
   assert(proxy_ip, "No http-proxy found in the configuration")
-  return http_client(proxy_ip, proxy_port, timeout)
+  return http_client(proxy_ip, proxy_port, timeout or 60000)
 end
 
 --- returns a pre-configured `http_client` for the Kong SSL proxy port.
@@ -485,7 +485,7 @@ local function proxy_ssl_client(timeout, sni)
   local proxy_ip = get_proxy_ip(true)
   local proxy_port = get_proxy_port(true)
   assert(proxy_ip, "No https-proxy found in the configuration")
-  local client = http_client(proxy_ip, proxy_port, timeout)
+  local client = http_client(proxy_ip, proxy_port, timeout or 60000)
   assert(client:ssl_handshake(nil, sni, false)) -- explicit no-verify
   return client
 end
@@ -501,7 +501,7 @@ local function admin_client(timeout, forced_port)
     end
   end
   assert(admin_ip, "No http-admin found in the configuration")
-  return http_client(admin_ip, forced_port or admin_port, timeout)
+  return http_client(admin_ip, forced_port or admin_port, timeout or 60000)
 end
 
 --- returns a pre-configured `http_client` for the Kong admin SSL port.
@@ -515,7 +515,7 @@ local function admin_ssl_client(timeout)
     end
   end
   assert(admin_ip, "No https-admin found in the configuration")
-  local client = http_client(admin_ip, admin_port, timeout)
+  local client = http_client(admin_ip, admin_port, timeout or 60000)
   assert(client:ssl_handshake())
   return client
 end