Add parameters for salt on scale ( >20 minions)

 - for salt-master max_open_files
 - for salt-minions:
   - acceptance_wait_time_max: 60
   - acceptance_wait_time: 10
   - random_reauth_delay: 270
   - recon_default: 1000
   - recon_max: 60000
   - recon_randomize: True
   - auth_timeout: 60

Fixes_bug: PROD-18322

Change-Id: I0fddbe9fb1da201dd3ac28e92d32a055690912ac
diff --git a/salt/master/single.yml b/salt/master/single.yml
index 9764a97..fbb32f2 100644
--- a/salt/master/single.yml
+++ b/salt/master/single.yml
@@ -13,7 +13,8 @@
     master:
       accept_policy: auto_accept
       worker_threads: 40
+      max_open_files: 15000
       command_timeout: 10
       peer:
         '.*':
-          - x509.sign_remote_certificate
+          - x509.sign_remote_certificate
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