Profile/Policy Spec-Version should always be type of string

There is inconsistent type for json api for Spec-Version, in some cases, "version": 1.0 (int), while other cases "version": "1.0" (string).

In the following example trace, the first profile contains int 1.0, while the second profile contains string "1.0"

GET /v1/profiles HTTP/1.1
Openstack-Api-Version: clustering 1.5

HTTP/1.1 200 OK
Openstack-Api-Version: clustering 1.5
Vary: OpenStack-API-Version
Content-Type: application/json
Content-Length: 16417
X-Openstack-Request-Id: req-b164dcba-67ca-4eab-b288-f29fa32a1186
Date: Wed, 09 May 2018 19:56:30 GMT
Connection: close

{"profiles": [{"created_at": "2017-09-29T02:11:18Z", "domain": null, "id": "d5b3aafd-ed76-465f-ba69-7aa3ddd2a8e0", "metadata": {}, "name": "eric-autoscaling-centos73", "project": "b779ad84b8184000a5fd114796bc4c72", "spec": {"properties": {"flavor": "t2.small", "image": "centos7.3-latest", "metadata": {"test_key": "test_value"}, "networks": [{"network": "sandbox-internal-net"}], "user_data": "#!/bin/sh\nset -x\n\nSWIFT_URL=\"http://dev.swift.cloud.blizzard.net:8081/v1/AUTH_b779ad84b8184000a5fd114796bc4c72\"\nyum -y install wget\nwget ${SWIFT_URL}/dev-autoscaling-private/bootstrap.sh -O /tmp/bootstrap.sh\nchmod +x /tmp/bootstrap.sh\n/tmp/bootstrap.sh | /usr/bin/tee -a /var/log/bootstrap.log\n"}, "type": "os.nova.server", "version": 1.0}, "type": "os.nova.server-1.0", "updated_at": null, "user": "ebe2bdcdb325d2445c427f54484294a98a5d2e1baa61a6fe0f309c566d4fc7a5"},
.....
.....
{"created_at": "2018-05-09T16:47:12Z", "domain": null, "id": "27bbc280-e54b-404c-9a6a-34d57ea18b27", "metadata": {"foo": "bar", "test": "123"}, "name": "TESTACC-frjgvdJs", "project": "b779ad84b8184000a5fd114796bc4c72", "spec": {"properties": {"flavor": "t2.micro", "image": "centos7.3-latest", "name": "centos-server", "networks": [{"network": "sandbox-internal-net"}], "security_groups": ""}, "type": "os.nova.server", "version": "1.0"}, "type": "os.nova.server-1.0", "updated_at": null, "user": "16fb286b76c032a2123cd2788aff87377426d77c9bcfc92beb2065dbe4ff2417"}, {"created_at": "2018-05-09T17:11:45Z", "domain": null, "id": "22894d76-ad51-4cd4-a9b2-b3daeb7d7ef6", "metadata": {"foo": "bar", "test": "123"}, "name": "TESTACC-mx0dX3DK", "project": "b779ad84b8184000a5fd114796bc4c72", "spec": {"properties": {"flavor": "t2.micro", "image": "centos7.3-latest", "name": "centos-server", "networks": [{"network": "sandbox-internal-net"}], "security_groups": ""}, "type": "os.nova.server", "version": "1.0"}, "type": "os.nova.server-1.0", "updated_at": null, "user": "16fb286b76c032a2123cd2788aff87377426d77c9bcfc92beb2065dbe4ff2417"}]}