Addition of configMap.yaml file

[vineela1999]

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespace from that line:

/kind new feature
/kind bug fix
/kind cleanup
/kind revert change
/kind design
/kind documentation
/kind enhancement

What this PR does / why we need it:
This PR includes configMap.yaml file instead of giving configMap from a file
Which issue(s) this PR fixes:

Fixes #

Test Report Added?:

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/kind TESTED
/kind NOT-TESTED

Test Report:

Special notes for your reviewer:

[joseph-v]

LGTM

[te-koyanagi]

I confirmed that the attached configMap.yaml works in the user integration scenario described in the document in PR #28.

This configMap was composed based on the api-paste.ini and delfin.conf files included in the directory under the delfin project.
https://github.com/sodafoundation/delfin/tree/master/etc/delfin

This configMap is almost the same as the configMap.yaml with prometheus committed on this PR.

apiVersion: v1
kind: ConfigMap

metadata:
  name: delfin-config
  namespace: default

data:
  delfin.conf: |
    [DEFAULT]
    api_paste_config = /etc/delfin/api-paste.ini
    delfin_cryptor = delfin.cryptor._Base64
    api_max_limit = 1000
    # Uncomment or add exporters
    performance_exporters = PerformanceExporterPrometheus, PerformanceExporterKafka
    alert_exporters = AlertExporterPrometheus

    [database]
    connection = sqlite:////var/lib/delfin/delfin.sqlite
    db_backend = sqlalchemy

    [TELEMETRY]
    performance_collection_interval = 900

    [KAFKA_EXPORTER]
    kafka_topic_name = "delfin-kafka"
    kafka_ip = 'localhost'
    kafka_port = '9092'

    [PROMETHEUS_EXPORTER]
    metric_server_ip = 0.0.0.0
    metric_server_port = 8195
    metrics_cache_file = /var/lib/delfin/delfin_exporter.txt

    [PROMETHEUS_ALERT_MANAGER_EXPORTER]
    alert_manager_host = 'localhost'
    alert_manager_port = '9093'

  api-paste.ini: |
    #############
    #  Delfin  #
    #############

    [composite:delfin]
    use = call:delfin.api:root_app_factory
    /v1: delfin_api_v1

    [filter:http_proxy_to_wsgi]
    paste.filter_factory = oslo_middleware.http_proxy_to_wsgi:HTTPProxyToWSGI.factory

    [pipeline:delfin_api_v1]
    pipeline = cors http_proxy_to_wsgi context_wrapper delfin_api_v1app

    [app:delfin_api_v1app]
    paste.app_factory = delfin.api.v1.router:APIRouter.factory

    [filter:context_wrapper]
    paste.filter_factory = delfin.api.middlewares:ContextWrapper.factory

    [filter:cors]
    paste.filter_factory = oslo_middleware.cors:filter_factory
    oslo_config_project = delfin