cleanup salt more strict

  * finally satisfy salt - add virt-what pkg by default for all.
  * set default log_file: /var/log/salt/(minion|master)
    For some reason salt 2017.7.5+ds-1 ignore default values and stuck after
    restart with
    2018-07-19 20:04:04,811 [salt.log.setup   :1145][ERROR   ][32030] An un-handled exception was caught by salt's global exception handler:
    IOError: [Errno 9] Bad file descriptor
    IOError: [Errno 9] Bad file descriptor

Change-Id: I276e410a86ba8f8ad8f68b110a90408558800d70
diff --git a/mirror-image/files/root/minion.conf b/mirror-image/files/root/minion.conf
index 24aba72..15345f7 100644
--- a/mirror-image/files/root/minion.conf
+++ b/mirror-image/files/root/minion.conf
@@ -4,37 +4,6 @@
 
 max_event_size: 100000000
 
-grains:
-  roles:
-  - iptables.service
-  - telegraf.agent
-  - heka.log_collector
-  - openssh.server
-  - ntp.client
-  - grafana.collector
-  - nginx.server
-  - prometheus.collector
-  - rsyslog.client
-  - linux.storage
-  - linux.network
-  - linux.system
-  - salt.minion
-  - aptly.publisher
-  - aptly.server
-  services:
-  - iptables
-  - telegraf
-  - heka
-  - openssh
-  - ntp
-  - grafana
-  - nginx
-  - prometheus
-  - rsyslog
-  - linux
-  - salt
-  - aptly
-
 grains_dirs:
 - /var/lib/salt/grains
 
@@ -43,5 +12,7 @@
   grains.items: []
 mine_interval: 60
 
-log_level: info
+log_file: /var/log/salt/minion
+log_level_logfile: warning
+
 state_output: changes