tgc: fix diffs for container cluster

[zli82016]

Two fields min_master_version and node_version caused import diffs, so remove them.

When auto_provisioning_defaults has default value from API, it is not converted.

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[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes for commit 9437597:

Diff report

Your PR generated the following diffs in downstream repositories:

Repository	Diff Link	Changes
terraform-google-conversion	View Diff	2 files changed, 1 insertion(+), 1 deletion(-)

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes for commit b5370bd:

Diff report

Your PR generated the following diffs in downstream repositories:

Repository	Diff Link	Changes
terraform-google-conversion	View Diff	2 files changed, 2 insertions(+), 2 deletions(-)

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes for commit 5dd1329:

Diff report

Your PR generated the following diffs in downstream repositories:

Repository	Diff Link	Changes
terraform-google-conversion	View Diff	2 files changed, 9 insertions(+), 6 deletions(-)

[zli82016]

/gcbrun

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes for commit 5dd1329:

Diff report

Your PR generated the following diffs in downstream repositories:

Repository	Diff Link	Changes
terraform-google-conversion	View Diff	2 files changed, 9 insertions(+), 6 deletions(-)