fix(server.sls): fix salt-lint errors

myii · myii · commit 45227821b040 · 2019-10-09T18:29:43.000+01:00
```bash
Examining redis/server.sls of type state
[210] Numbers that start with `0` should always be encapsulated in quotation marks
redis/server.sls:44
    - mode: 0750

[210] Numbers that start with `0` should always be encapsulated in quotation marks
redis/server.sls:94
    - mode: 0777
```
diff --git a/redis/server.sls b/redis/server.sls
@@ -41,7 +41,7 @@ redis-init-script:
     - name: /etc/init/redis-server.conf
     - template: jinja
     - source: salt://redis/files/upstart.conf.jinja
-    - mode: 0750
+    - mode: '0750'
     - user: root
     - group: root
     - context:
@@ -91,7 +91,7 @@ redis-initd:
     - name: /etc/init.d/redis
     - template: jinja
     - source: salt://redis/files/redis_initd.jinja
-    - mode: 0777
+    - mode: '0777'
     - user: root
     - group: root
     - require:
