1.8.1

• set label to istio.io/rev=1.8.1
• update README infos
• update Dockerfiles
• rebuild and sync images in yamls

What's Changed

• chore(master): make istio.io/rev to the latest version by @Xunzhuo in #1
• chore: add apache 2.0 license by @Xunzhuo in #3
• docs(master): optimize and update README info by @Xunzhuo in #4
• fix: update README and remove TOCs by @Xunzhuo in #6
• fix: update documents link by @Xunzhuo in #7
• chore: update README info by @Xunzhuo in #10
• fix(client): update label to istio.io/rev: 1-10-3 by @Xunzhuo in #9
• chore: add architecture info by @Xunzhuo in #11
• chore: update content list by @Xunzhuo in #12
• refactor: update header title in frontend by @Xunzhuo in #13
• feat: update dockerfiles and sync docker images by @Xunzhuo in #8
• docs(readme): add details about version control by @Xunzhuo in #15

Full Changelog: https://github.com/Tencent-Cloud-Mesh/mesh-demo/commits/1.8.1