Update mirrors of centos7

[wForget]

What is the purpose of the change

Update mirrors of centos7.

Refer:

https://github.com/apache/arrow/blob/21238a7f5ebb224410d84ecf32dbe3556cab363a/ci/docker/centos-7-cpp.dockerfile#L20-L26

Fix failed integration test, error:

     [exec] #7 [linkis-base 2/3] RUN yum install -y        less vim unzip curl sudo krb5-workstation sssd crontabs net-tools python-pip glibc-common        java-1.8.0-openjdk-1.8.0.332.b09-1.el7_9        java-1.8.0-openjdk-devel-1.8.0.332.b09-1.el7_9        mysql     && yum clean all
     [exec] #7 0.418 Loaded plugins: fastestmirror, ovl
     [exec] #7 0.512 Determining fastest mirrors
     [exec] #7 0.525 Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=container error was
     [exec] #7 0.525 14: curl#6 - "Could not resolve host: mirrorlist.centos.org; Unknown error"

Related issues/PRs

Brief change log

Checklist

• [x] I have read the Contributing Guidelines on pull requests.
• [ ] I have explained the need for this PR and the problem it solves
• [ ] I have explained the changes or the new features added to this PR
• [ ] I have added tests corresponding to this change
• [ ] I have updated the documentation to reflect this change
• [ ] I have verified that this change is backward compatible (If not, please discuss on the Linkis mailing list first)
• [ ] If this is a code change: I have written unit tests to fully verify the new behavior.