Fix issue with an instances label causing a ForceNew if omitted.
Also updates mistyped docs for the `opc_compute_security_list` resource.
```
$ make testacc TEST=./builtin/providers/opc TESTARGS="-run=TestAccOPCInstance_emptyLabel"
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/04/21 09:57:48 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/opc -v -run=TestAccOPCInstance_emptyLabel -timeout 120m
=== RUN TestAccOPCInstance_emptyLabel
--- PASS: TestAccOPCInstance_emptyLabel (574.79s)
PASS
ok github.com/hashicorp/terraform/builtin/providers/opc 574.835s
```
* Fix invalid MIME formatting in multipart cloudinit userdata
Per https://tools.ietf.org/html/rfc822#appendix-B.2, MIME headers and Body need to be separated by two new lines (or CRLFs in this case).
The email parser in python can handle this which is what cloud-init uses but this bug causes problems if you try to parse the multipart message by languages other than python.
* Fix test cases
The reconfigure flag will force init to ignore any saved backend state.
This is useful when a user does not want any backend migration to
happen, or if the saved configuration can't be loaded at all for some
reason.
Fixes: #13805
Before the fix:
```
Error refreshing state: 1 error(s) occurred:
* logentries_logset.logset: logentries_logset.logset: No such log set with key 278e7344-1201-43ba-9804-77b9a72fe7d6
```
After the fix:
```
% terraform plan ✚ ✭
[WARN] /Users/stacko/Code/go/bin/terraform-provider-logentries overrides an internal plugin for logentries-provider.
If you did not expect to see this message you will need to remove the old plugin.
See https://www.terraform.io/docs/internals/internal-plugins.html
Refreshing Terraform state in-memory prior to plan...
The refreshed state will be used to calculate this plan, but will not be
persisted to local or remote state storage.
logentries_logset.logset: Refreshing state... (ID: 278e7344-...a72fe7d6)
logentries_log.log: Refreshing state... (ID: 2ae1e8ae-...e932d25c)
The Terraform execution plan has been generated and is shown below.
Resources are shown in alphabetical order for quick scanning. Green resources
will be created (or destroyed and then created if an existing resource
exists), yellow resources are being changed in-place, and red resources
will be destroyed. Cyan entries are data sources to be read.
Note: You didn't specify an "-out" parameter to save this plan, so when
"apply" is called, Terraform can't guarantee this is what will execute.
+ logentries_log.log
logset_id: "${logentries_logset.logset.id}"
name: "test-log"
retention_period: "ACCOUNT_DEFAULT"
source: "token"
token: "<computed>"
+ logentries_logset.logset
location: "nonlocation"
name: "testing-terraform-destroy"
Plan: 2 to add, 0 to change, 0 to destroy.
```
Test Run:
```
% make testacc TEST=./builtin/providers/logentries ✚ ✭
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/04/20 20:36:20 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/logentries -v -timeout 120m
=== RUN TestProvider
--- PASS: TestProvider (0.00s)
=== RUN TestProvider_impl
--- PASS: TestProvider_impl (0.00s)
=== RUN TestAccLogentriesLog_Token
--- PASS: TestAccLogentriesLog_Token (39.03s)
=== RUN TestAccLogentriesLog_SourceApi
--- PASS: TestAccLogentriesLog_SourceApi (28.46s)
=== RUN TestAccLogentriesLog_SourceAgent
--- PASS: TestAccLogentriesLog_SourceAgent (6.19s)
=== RUN TestAccLogentriesLog_RetentionPeriod1M
--- PASS: TestAccLogentriesLog_RetentionPeriod1M (3.04s)
=== RUN TestAccLogentriesLog_RetentionPeriodAccountDefault
--- PASS: TestAccLogentriesLog_RetentionPeriodAccountDefault (2.71s)
=== RUN TestAccLogentriesLog_RetentionPeriodAccountUnlimited
--- PASS: TestAccLogentriesLog_RetentionPeriodAccountUnlimited (2.65s)
=== RUN TestAccLogentriesLogSet_Basic
--- PASS: TestAccLogentriesLogSet_Basic (1.54s)
=== RUN TestAccLogentriesLogSet_NoLocation
--- PASS: TestAccLogentriesLogSet_NoLocation (1.54s)
PASS
ok github.com/hashicorp/terraform/builtin/providers/logentries 85.177s
```
