Support: tags in resource_instance datasource

[kavya498]

Community Note

• Please vote on this pull request by adding a 👍 reaction to the original pull request comment to help the community and maintainers prioritize this request
• Please do not leave "+1" or other comments that do not add relevant new information or questions, they generate extra noise for pull request followers and do not help prioritize the request

Output from acceptance testing:

$terraform show

# data.ibm_resource_instance.logdna_instance:
data "ibm_resource_instance" "logdna_instance" {
    crn                     = "crn:v1:bluemix:public:logdna:us-south:a/4448261269a14562b839e0a3019ed980:cad272c8-fcf7-4e3a-8bcf-07b1e294b316::"
    extensions              = {}
    guid                    = "cad272c8-fcf7-4e3a-8bcf-07b1e294b316"
    id                      = "crn:v1:bluemix:public:logdna:us-south:a/4448261269a14562b839e0a3019ed980:cad272c8-fcf7-4e3a-8bcf-07b1e294b316::"
    location                = "us-south"
    name                    = "fs-logdna"
    plan                    = "30-day"
    resource_controller_url = "https://cloud.ibm.com/services/"
    resource_crn            = "crn:v1:bluemix:public:logdna:us-south:a/4448261269a14562b839e0a3019ed980:cad272c8-fcf7-4e3a-8bcf-07b1e294b316::"
    resource_group_id       = "a06db00ce84e4b8a8ac81ef56748c513"
    resource_name           = "fs-logdna"
    resource_status         = "active"
    service                 = "logdna"
    status                  = "active"
    tags                    = [
        "fs-cloud",
    ]
}

...