Align import statements in various files closer to the generated code

[rileykarson]

Probably the only notable bit is the inclusion of fake404 to hold the googleapi import- that code only appears in a deep conditional, and it seems like conditions in ERB don't short-circuit making it hard to write a condition for it.

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)

[modular-magician]

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

Diff report:

Terraform GA: Diff ( 13 files changed, 25 insertions(+), 64 deletions(-))
Terraform Beta: Diff ( 13 files changed, 27 insertions(+), 66 deletions(-))
TF Validator: Diff ( 3 files changed, 11 insertions(+), 3 deletions(-))

[modular-magician]

Tests analytics

Total tests: 2022
Passed tests 1792
Skipped tests: 226
Failed tests: 4

Action taken

Triggering VCR tests in RECORDING mode for the following tests that failed during VCR: TestAccServiceNetworkingPeeredDNSDomain_basic|TestAccFirebaserulesRelease_BasicRelease|TestAccCloudAssetFolderFeed_cloudAssetFolderFeedExample|TestAccDatasourceGoogleServiceNetworkingPeeredDnsDomain_basic

[modular-magician]

Tests passed during RECORDING mode:
TestAccDatasourceGoogleServiceNetworkingPeeredDnsDomain_basic[view]
TestAccFirebaserulesRelease_BasicRelease[view]

Tests failed during RECORDING mode:
TestAccServiceNetworkingPeeredDNSDomain_basic[view]
TestAccCloudAssetFolderFeed_cloudAssetFolderFeedExample[view]

Please fix these to complete your PR
View the build log or the debug log for each test

[rileykarson]

Hey, neat, this actually speeds up the Magician. Looking at base vs head in the original run:

	Old	New
TPG	7:13	5:03
TPGB	7:33	4:53
TFV	4:42	4:09

On my machine, a full TPGB run goes from 7m to 2m. Full removal of goimports only brings that to 1m!

[slevenick]

Hey, neat, this actually speeds up the Magician. Looking at base vs head in the original run:

Old New
TPG 7:13 5:03
TPGB 7:33 4:53
TFV 4:42 4:09
On my machine, a full TPGB run goes from 7m to 2m. Full removal of goimports only brings that to 1m!

Amazing that a small change makes such a big difference in time!

[modular-magician]

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

Diff report:

Terraform GA: Diff ( 13 files changed, 31 insertions(+), 70 deletions(-))
Terraform Beta: Diff ( 13 files changed, 29 insertions(+), 68 deletions(-))
TF Validator: Diff ( 3 files changed, 11 insertions(+), 3 deletions(-))

[modular-magician]

Tests analytics

Total tests: 2022
Passed tests 1793
Skipped tests: 226
Failed tests: 3

Action taken

Triggering VCR tests in RECORDING mode for the following tests that failed during VCR: TestAccServiceNetworkingPeeredDNSDomain_basic|TestAccFirebaserulesRelease_BasicRelease|TestAccCloudAssetFolderFeed_cloudAssetFolderFeedExample

[modular-magician]

Tests passed during RECORDING mode:
TestAccFirebaserulesRelease_BasicRelease[view]

Tests failed during RECORDING mode:
TestAccCloudAssetFolderFeed_cloudAssetFolderFeedExample[view]
TestAccServiceNetworkingPeeredDNSDomain_basic[view]

Please fix these to complete your PR
View the build log or the debug log for each test