Add Erase Windows VSS support to compute disk

[upodroid]

updated user facing examples to use debian 9 instead of debian 8.

If this PR is for Terraform, I acknowledge that I have:

• Searched through the issue tracker for an open issue that this either resolves or contributes to, commented on it to claim it, and written "fixes {url}" or "part of {url}" in this PR description. If there were no relevant open issues, I opened one and commented that I would like to work on it (not necessary for very small changes).
• Generated Terraform, and ran make test and make lint to ensure it passes unit and linter tests.
• Ensured that all new fields I added that can be set by a user appear in at least one example (for generated resources) or third_party test (for handwritten resources or update tests).
• Ran relevant acceptance tests (If the acceptance tests do not yet pass or you are unable to run them, please let your reviewer know).
• Read the Release Notes Guide before writing my release note below.

Release Note Template for Downstream PRs (will be copied)

compute: added `erase_windows_vss_signature` field to `google_compute_disk` (beta)

[modular-magician]

Hello! I am a robot who works on Magic Modules PRs.

I have detected that you are a community contributor, so your PR will be assigned to someone with a commit-bit on this repo for initial review.

Thanks for your contribution! A human will be with you soon.

@c2thorn, please review this PR or find an appropriate assignee.

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 3 files changed, 89 insertions(+), 2 deletions(-))
Terraform Beta: Diff ( 5 files changed, 151 insertions(+), 4 deletions(-))
Ansible: Diff ( 2 files changed, 114 insertions(+), 18 deletions(-))
TF Conversion: Diff ( 1 file changed, 33 insertions(+))
TF OiCS: Diff ( 1 file changed, 1 insertion(+), 1 deletion(-))
Inspec: Diff ( 7 files changed, 30 insertions(+), 1 deletion(-))

[c2thorn]

@upodroid Hey! Someone else was going to take up adding the multiwriter option, and I never assigned the task to them, so that is my fault. However you have a few other fields added here, do you mind adding a test? Particularly for eraseWindowsVssSignature

[upodroid]

I added a new test, however I'm receiving 50X from Google. Internal Error.

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 3 files changed, 89 insertions(+), 2 deletions(-))
Terraform Beta: Diff ( 6 files changed, 207 insertions(+), 4 deletions(-))
Ansible: Diff ( 2 files changed, 114 insertions(+), 18 deletions(-))
TF Conversion: Diff ( 1 file changed, 33 insertions(+))
TF OiCS: Diff ( 1 file changed, 1 insertion(+), 1 deletion(-))
Inspec: Diff ( 7 files changed, 30 insertions(+), 1 deletion(-))

[c2thorn]

@upodroid Yeah looks like the feature is still in alpha, and isn't enabled by default in projects. we can remove this feature from this PR so we can merge your other changes?

[upodroid]

It is done. I updated the PR Title and changelog to refer to this.

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 4 files changed, 94 insertions(+), 7 deletions(-))
Terraform Beta: Diff ( 7 files changed, 182 insertions(+), 9 deletions(-))
Ansible: Diff ( 2 files changed, 114 insertions(+), 18 deletions(-))
TF Conversion: Diff ( 1 file changed, 33 insertions(+))
TF OiCS: Diff ( 1 file changed, 1 insertion(+), 1 deletion(-))
Inspec: Diff ( 7 files changed, 23 insertions(+), 1 deletion(-))

[c2thorn]

Minor test naming fix, but looks good otherwise

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 4 files changed, 94 insertions(+), 7 deletions(-))
Terraform Beta: Diff ( 7 files changed, 182 insertions(+), 9 deletions(-))
Ansible: Diff ( 2 files changed, 114 insertions(+), 18 deletions(-))
TF Conversion: Diff ( 1 file changed, 33 insertions(+))
TF OiCS: Diff ( 1 file changed, 1 insertion(+), 1 deletion(-))
Inspec: Diff ( 7 files changed, 23 insertions(+), 1 deletion(-))