[Enhancement] Create aws k3s cluster with multiple master nodes, the instance names are the same and not easy to distinguish

[ly5156]

Describe the bug Create aws k3s cluster with multiple master nodes, the instance names are the same and not easy to distinguish

To reproduce Steps to reproduce the behavior:

1. go to the cluster page，choose aws provider
2. enable High Availability Clusters
3. set master value to 2 or 3
4. Instance names are the same

Expected behavior Multiple instance names should be differentiated, for example by adding a numeric suffix

Environments (please complete the following information):

• OS: [e.g. Darwin Bigsur]: mac os
• AutoK3s Version [e.g. v0.4.0]: v0.6.1