provider/pagerduty: Add pagerduty_user data source

[paultyng]

This data source allows you to query for a user ID by email address. It doesn't provide any other means to query user data, but could be extended to support others.

data "pagerduty_user" "me" {
  email = "me@example.com"
}

resource "pagerduty_escalation_policy" "foo" {
  name      = "Engineering Escalation Policy"
  num_loops = 2

  rule {
    escalation_delay_in_minutes = 10

    target {
      type = "user"
      id   = "${data.pagerduty_user.me.id}"
    }
  }
}

[stack72]

Thanks @paultyng

This LGTM!

% make testacc TEST=./builtin/providers/pagerduty                                                       1 ↵
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2016/12/05 22:38:47 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/pagerduty -v  -timeout 120m
=== RUN   TestAccDataSourcePagerDutyUser_Basic
--- PASS: TestAccDataSourcePagerDutyUser_Basic (4.75s)
=== RUN   TestAccPagerDutyVendor_Basic
--- PASS: TestAccPagerDutyVendor_Basic (8.50s)
=== RUN   TestAccPagerDutyEscalationPolicy_import
--- PASS: TestAccPagerDutyEscalationPolicy_import (7.32s)
=== RUN   TestAccPagerDutySchedule_import
--- PASS: TestAccPagerDutySchedule_import (7.40s)
=== RUN   TestAccPagerDutyService_import
--- PASS: TestAccPagerDutyService_import (26.59s)
=== RUN   TestAccPagerDutyTeam_import
--- PASS: TestAccPagerDutyTeam_import (2.96s)
=== RUN   TestAccPagerDutyUser_import
--- PASS: TestAccPagerDutyUser_import (3.79s)
=== RUN   TestProvider
--- PASS: TestProvider (0.00s)
=== RUN   TestProviderImpl
--- PASS: TestProviderImpl (0.00s)
=== RUN   TestAccPagerDutyEscalationPolicy_Basic
--- PASS: TestAccPagerDutyEscalationPolicy_Basic (11.91s)
=== RUN   TestAccPagerDutyEscalationPolicyWithTeams_Basic
--- PASS: TestAccPagerDutyEscalationPolicyWithTeams_Basic (12.31s)
=== RUN   TestAccPagerDutySchedule_Basic
--- PASS: TestAccPagerDutySchedule_Basic (9.70s)
=== RUN   TestAccPagerDutySchedule_Multi
--- PASS: TestAccPagerDutySchedule_Multi (7.74s)
=== RUN   TestAccPagerDutyServiceIntegration_Basic
--- PASS: TestAccPagerDutyServiceIntegration_Basic (26.99s)
=== RUN   TestAccPagerDutyService_Basic
--- PASS: TestAccPagerDutyService_Basic (12.23s)
=== RUN   TestAccPagerDutyTeam_Basic
--- PASS: TestAccPagerDutyTeam_Basic (4.20s)
=== RUN   TestAccPagerDutyUser_Basic
--- PASS: TestAccPagerDutyUser_Basic (5.57s)
=== RUN   TestAccPagerDutyUserWithTeams_Basic
--- PASS: TestAccPagerDutyUserWithTeams_Basic (13.44s)
PASS
ok  	github.com/hashicorp/terraform/builtin/providers/pagerduty	165.430s

[ghost]

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