fix rubocop issues

Signed-off-by: Patrick Münch <patrick.muench1111@gmail.com>

Author: atomic111

.rubocop.yml

@@ -2,14 +2,12 @@
 AllCops:
   Exclude:
   - vendor/**/*
-  - "*/puppet/Puppetfile"
-  - "*/puppet/.tmp/**/*"
 Documentation:
   Enabled: false
 AlignParameters:
   Enabled: true
 Encoding:
-  Enabled: true
+  Enabled: false
 HashSyntax:
   Enabled: true
 LineLength:
@@ -26,3 +24,5 @@ Metrics/PerceivedComplexity:
   Max: 10
 Metrics/AbcSize:
   Max: 29
+Metrics/BlockLength:
+  Max: 29

libraries/docker.rb

@@ -40,7 +40,7 @@ def inspect(id)
 
   def path
     cmd = inspec.command('systemctl show -p FragmentPath docker.service')
-    return nil if cmd.exit_status.to_i != 0
+    return nil if cmd.exit_status.to_i.nonzero?
 
     # parse data
     params = parse_systemd_values(cmd.stdout.chomp)
@@ -51,7 +51,7 @@ def path
 
   def socket
     cmd = inspec.command('systemctl show -p FragmentPath docker.socket')
-    return nil if cmd.exit_status.to_i != 0
+    return nil if cmd.exit_status.to_i.nonzero?
 
     # parse data
     params = parse_systemd_values(cmd.stdout.chomp)