[google|sql] Add support for Flags

- Add models, requests and tests for Flags
[google|sql] Add support for Operations

- Add models, requests and tests for Operations
[google|sql] Add support for Instances

- Add models, requests and tests for Instances
[google|sql] Add support for SslCerts

- Add models, requests and tests for SslCerts
[google|sql] Add support for BackupRuns

- Add models and requests for BackupRuns
[google|sql] Add examples
Merge pull request #3077 from frodenas/gce_sql

[google|sql] Complete support for Google Cloud SQL
[google|sql] Use the correct directory for Google Cloud SQL examples
Accept Block For Get Requests
resolve conflicts
remove Git Markup
Merge pull request #3090 from tlawrence/master

Accept Block For Get Requests
[aws|compute] fix mock az filtering

closes #3089
Merge pull request #3085 from frodenas/gce_sql

[google|sql] Use the correct directory for Google Cloud SQL examples
Fix parsing of SpotInstanceRequests responce when we also specify NetworkInterface
Fix to follow ruby code style
Merge pull request #3092 from goruha/DescribeInstancesResponse-SAX-parcer-fix

Fix parsing of SpotInstanceRequests responce when we also specify NetworkInterface
Merge branch 'master' into gce_l7