[FIX]: adds timestamp to kube-bench adapter

[mritunjaysharma394]

This PR adds timestamp to kube-bench adapter and fixes #100 Since kube-bench itself doesn't have timestamp field, we couldn't earlier map it, that's why for now, we are mapping it with time.Now

The updated clusterpolicyreport somewhat will look like this:

 - category: CIS Benchmarks
    message: Ensure that the admin.conf file permissions are set to 644 or more restrictive
      (Automated)
    policy: Master Node Security Configuration 1.1.13
    properties:
      AuditConfig: ""
      AuditEnv: ""
      IsMultiple: "false"
      actual_value: permissions=600
      audit: /bin/sh -c 'if test -e /etc/kubernetes/admin.conf; then stat -c permissions=%a
        /etc/kubernetes/admin.conf; fi'
      expected_result: permissions has permissions 600, expected 644 or more restrictive
      index: 1.1.13
      reason: ""
      remediation: |
        Run the below command (based on the file location on your system) on the master node.
        For example,
        chmod 644 /etc/kubernetes/admin.conf
      test_info: |
        Run the below command (based on the file location on your system) on the master node.
        For example,
        chmod 644 /etc/kubernetes/admin.conf
      type: ""
    result: pass
    rule: Master Node Configuration Files
    scored: true
    source: Kube Bench
    timestamp:
      nanos: 585075739
      seconds: 36
  - category: CIS Benchmarks
    message: Ensure that the admin.conf file ownership is set to root:root (Automated)
    policy: Master Node Security Configuration 1.1.14
    properties:
      AuditConfig: ""
      AuditEnv: ""
      IsMultiple: "false"
      actual_value: root:root
      audit: /bin/sh -c 'if test -e /etc/kubernetes/admin.conf; then stat -c %U:%G
        /etc/kubernetes/admin.conf; fi'
      expected_result: '''root:root'' is present'
      index: 1.1.14
      reason: ""
      remediation: |
        Run the below command (based on the file location on your system) on the master node.
        For example,
        chown root:root /etc/kubernetes/admin.conf
      test_info: |
        Run the below command (based on the file location on your system) on the master node.
        For example,
        chown root:root /etc/kubernetes/admin.conf
      type: ""
    result: pass
    rule: Master Node Configuration Files
    scored: true
    source: Kube Bench
    timestamp:
      nanos: 585076620
      seconds: 36

Signed-off-by: Mritunjay Sharma mritunjaysharma394@gmail.com

cc @JimBugwadia @realshuting

[mritunjaysharma394]

/assign @JimBugwadia

[JimBugwadia]

/lgtm /approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: JimBugwadia, mritunjaysharma394

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