[ko] Update outdated files in dev-1.26-ko.1 (M197-M200)

Signed-off-by: jongwooo <jongwooo.han@gmail.com>

content/ko/examples/application/deployment-scale.yaml

@@ -14,6 +14,6 @@ spec:
     spec:
       containers:
       - name: nginx
-        image: nginx:1.14.2
+        image: nginx:1.16.1
         ports:
         - containerPort: 80

content/ko/examples/application/mysql/mysql-statefulset.yaml

@@ -24,7 +24,7 @@ spec:
         - |
           set -ex
           # 파드의 원래 인덱스에서 mysql server-id를 생성.
-          [[ `hostname` =~ -([0-9]+)$ ]] || exit 1
+          [[ $HOSTNAME =~ -([0-9]+)$ ]] || exit 1
           ordinal=${BASH_REMATCH[1]}
           echo [mysqld] > /mnt/conf.d/server-id.cnf
           # 예약된 server-id=0 값을 피하기 위해 오프셋 추가.

content/ko/examples/controllers/daemonset.yaml

@@ -35,14 +35,8 @@ spec:
         volumeMounts:
         - name: varlog
           mountPath: /var/log
-        - name: varlibdockercontainers
-          mountPath: /var/lib/docker/containers
-          readOnly: true
       terminationGracePeriodSeconds: 30
       volumes:
       - name: varlog
         hostPath:
           path: /var/log
-      - name: varlibdockercontainers
-        hostPath:
-          path: /var/lib/docker/containers

content/ko/examples/security/kind-with-cluster-level-baseline-pod-security.sh

@@ -6,7 +6,7 @@ kind: AdmissionConfiguration
 plugins:
 - name: PodSecurity
   configuration:
-    apiVersion: pod-security.admission.config.k8s.io/v1beta1
+    apiVersion: pod-security.admission.config.k8s.io/v1
     kind: PodSecurityConfiguration
     defaults:
       enforce: "baseline"