[Optimizer] Check the unsupported features before the optimization

[Michaelvll]

Some clouds does not support stopping the cluster. However, it is only checked during the failover, which means the cloud will show up in the optimizer table, which can cause confusion. We should check the unsupported feature before the optimization.

To reproduce: sky launch -i 0 --cpus 2

I 07-13 20:45:56 optimizer.py:732] Considered resources (1 node):
I 07-13 20:45:56 optimizer.py:781] ---------------------------------------------------------------------------------------------------
I 07-13 20:45:56 optimizer.py:781]  CLOUD        INSTANCE          vCPUs   Mem(GB)   ACCELERATORS   REGION/ZONE   COST ($)   CHOSEN
I 07-13 20:45:56 optimizer.py:781] ---------------------------------------------------------------------------------------------------
I 07-13 20:45:56 optimizer.py:781]  Kubernetes   2CPU--2GB         2       2         -              kubernetes    0.00          ✔
I 07-13 20:45:56 optimizer.py:781]  AWS          m6i.large         2       8         -              us-east-1     0.10
I 07-13 20:45:56 optimizer.py:781]  Azure        Standard_D2s_v5   2       8         -              eastus        0.10
I 07-13 20:45:56 optimizer.py:781]  GCP          n2-standard-2     2       8         -              us-central1   0.10
I 07-13 20:45:56 optimizer.py:781]  IBM          bx2-8x32          8       32        -              us-east       0.38
I 07-13 20:45:56 optimizer.py:781]  Lambda       gpu_1x_a10        30      200       A10:1          us-east-1     0.60
I 07-13 20:45:56 optimizer.py:781] ---------------------------------------------------------------------------------------------------
I 07-13 20:45:56 optimizer.py:781]
Launching a new cluster 'test-cpu'. Proceed? [Y/n]:

Here the Lambda and Kubernetes do not support stopping the cluster.

[Saikrishna-Achalla]

I'd like to take this up!

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This issue is stale because it has been open 120 days with no activity. Remove stale label or comment or this will be closed in 10 days.

[github-actions[bot]]

This issue was closed because it has been stalled for 10 days with no activity.

[github-actions[bot]]

This issue is stale because it has been open 120 days with no activity. Remove stale label or comment or this will be closed in 10 days.

[github-actions[bot]]

This issue was closed because it has been stalled for 10 days with no activity.