[TEST] Fix test_z_terraform.py::test_create_ssh_key::setup

[albinsun]

What's the test to develop? Please describe

• test_z_terraform.py::test_create_ssh_key::setup FAIL on terraform init
• Seems caused by clean terraform cache not work so init fails due to cache still there. The rv object is async and not return yet.

Prerequisite and dependency of test

Additional context

[lanfon72]

The bug introduced from #1421, the original idea that we should use latest version for 0.0.0-dev to get correct sub class (TerraformResource_063), but still need to write 0.0.0-dev in provider.tf.

The fix #1421 did let us to get correct sub class, but the provider.tf still wrote latest version 0.6.4 as its version; then when we try to install 0.6.4 as the provider, terraform will try to search whether the global path ~/.terraform/plugins/... contains it, and as we were put 0.0.0-dev in the folder, so the installation will fail. (as the snapshot you provided.)

To fix this, we have several things need to do:

1. Make sure we can get latest sub class and use 0.0.0-dev as the version if user provided it.
2. Remove the global installed 0.0.0-dev (I had removed it)
3. When user use 0.0.0-dev, DO NOT install it to global path, we can use terraform init -plugin-dir as the alternative path