* provider/aws: Add ability to create aws_ebs_snapshot
```
% make testacc TEST=./builtin/providers/aws TESTARGS='-run=TestAccAWSEBSSnapshot_'
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2016/11/10 14:18:36 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/aws -v -run=TestAccAWSEBSSnapshot_
-timeout 120m
=== RUN TestAccAWSEBSSnapshot_basic
--- PASS: TestAccAWSEBSSnapshot_basic (31.56s)
=== RUN TestAccAWSEBSSnapshot_withDescription
--- PASS: TestAccAWSEBSSnapshot_withDescription (189.35s)
PASS
ok github.com/hashicorp/terraform/builtin/providers/aws220.928s
```
* docs/aws: Addition of the docs for aws_ebs_snapshot resource
* provider/aws: Creation of shared schema funcs for common AWS data source
patterns
* provider/aws: Create aws_ebs_snapshot datasource
Fixes#8828
This data source will use a number of filters, owner_ids, snapshot_ids
and restorable_by_user_ids in order to find the correct snapshot. The
data source has no real use case for most_recent and will error on no
snapshots found or greater than 1 snapshot found
```
% make testacc TEST=./builtin/providers/aws TESTARGS='-run=TestAccAWSEbsSnapshotDataSource_'
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2016/11/10 14:34:33 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/aws -v
-run=TestAccAWSEbsSnapshotDataSource_ -timeout 120m
=== RUN TestAccAWSEbsSnapshotDataSource_basic
--- PASS: TestAccAWSEbsSnapshotDataSource_basic (192.66s)
=== RUN TestAccAWSEbsSnapshotDataSource_multipleFilters
--- PASS: TestAccAWSEbsSnapshotDataSource_multipleFilters (33.84s)
PASS
ok github.com/hashicorp/terraform/builtin/providers/aws226.522s
```
* docs/aws: Addition of docs for the aws_ebs_snapshot data source
Adds the new resource `aws_ebs_snapshot`
Paul Stack