resources
Fixes#8420
Adds the ability to update tags on the ALB resource as well as
supporting tags on `aws_alb_target_group`
```
ALB Tests:
% make testacc TEST=./builtin/providers/aws TESTARGS='-run=TestAccAWSALB_' 2 ↵ ✹
==> Checking that code complies with gofmt requirements...
/Users/stacko/Code/go/bin/stringer
go generate $(go list ./... | grep -v /terraform/vendor/)
2016/08/23 19:30:16 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/aws -v -run=TestAccAWSALB_ -timeout 120m
=== RUN TestAccAWSALB_basic
--- PASS: TestAccAWSALB_basic (67.18s)
=== RUN TestAccAWSALB_tags
--- PASS: TestAccAWSALB_tags (99.88s)
=== RUN TestAccAWSALB_noSecurityGroup
--- PASS: TestAccAWSALB_noSecurityGroup (62.49s)
=== RUN TestAccAWSALB_accesslogs
--- PASS: TestAccAWSALB_accesslogs (126.25s)
PASS
ok github.com/hashicorp/terraform/builtin/providers/aws 355.835s
```
```
ALB Target Group Tests:
% make testacc TEST=./builtin/providers/aws TESTARGS='-run=TestAccAWSALBTargetGroup_'
==> Checking that code complies with gofmt requirements...
/Users/stacko/Code/go/bin/stringer
go generate $(go list ./... | grep -v /terraform/vendor/)
2016/08/23 19:37:37 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/aws -v -run=TestAccAWSALBTargetGroup_ -timeout 120m
=== RUN TestAccAWSALBTargetGroup_basic
--- PASS: TestAccAWSALBTargetGroup_basic (47.26s)
=== RUN TestAccAWSALBTargetGroup_tags
--- PASS: TestAccAWSALBTargetGroup_tags (81.01s)
=== RUN TestAccAWSALBTargetGroup_updateHealthCheck
--- PASS: TestAccAWSALBTargetGroup_updateHealthCheck (78.74s)
PASS
ok github.com/hashicorp/terraform/builtin/providers/aws 207.025s
```
This commit adds an `arn` field to `aws_alb` and `aws_alb_target_group`
resources, in order to present a more coherant user experience to people
using resource variables in fields suffixed "arn".
This commit adds a resource, acceptance tests and documentation for the
Target Groups for Application Load Balancers.
This is the second in a series of commits to fully support the new
resources necessary for Application Load Balancers.
Paul Stack