Store Jira server type in `jira_tracking_data` table

There are times when we need know what kind of server we're using, in order to issue the appropriate API call.

We should track this information in the jira_tracker_data table

For example, rest/api/2/serverInfo to a cloud instance gives

{
  "baseUrl": "the_url",
  "version": "1001.0.0-SNAPSHOT",
  "versionNumbers": [
    1001,
    0,
    0
  ],
  "deploymentType": "Cloud",
  "buildNumber": 100133,
  "buildDate": "2020-07-15T01:21:25.000-0700",
  "serverTime": "2020-07-15T08:56:35.890-0700",
  "scmInfo": "e2b9ca25fcf8535e74d29547edc867f25501bbde",
  "serverTitle": "Jira",
  "defaultLocale": {
    "locale": "en_US"
  }
}

rest/api/2/serverInfo to a server instance gives

{
  "baseUrl": "the_url",
  "version": "8.5.5",
  "versionNumbers": [
    8,
    5,
    5
  ],
  "deploymentType": "Server",
  "buildNumber": 805005,
  "buildDate": "2020-06-05T00:00:00.000+0000",
  "databaseBuildNumber": 805005,
  "serverTime": "2020-07-16T16:52:32.989+0000",
  "scmInfo": "a6982cff65627fb3fa50669b736095827f0ea0a7",
  "serverTitle": "JIRA"
}

We should store the deploymentType. At the moment this is enough to allow us to determine which API we can use. We can store additional information as the need arises.