Add licensing

[Tschasmine]

A valid license is required upon pressing the start button in the G30L0 Infosystem and upon pressing the yg30l0calcgeoloc button in the Customer screen.
Use the [ESDK client api] (https://documentation.abas.cloud/en/esdk/#_use_the_esdk_client_api) for validating the license.

To make the tests run a cloud-connect installation is necessary, for Travis CI add the following to the .travis.yml file:

- mkdir -p cloud-connect
- wget -qO- 'https://esdk-hybrid.eu.abas.cloud/cloud-connect.tgz' | tar xfz - --directory cloud-connect
- sed -e "s/hostname/$(hostname)/g" ci/configuration.json > cloud-connect/configuration.json
- cloud-connect/setup.sh -n --tenant-configuration $TENANT_SECRET
- cloud-connect/run.sh

Also add the file configuration.json to the ci directory within your project:

{
  "version": 1,
  "installation_mode": 2,
  "tenant": "esdk-hybrid",
  "domain": "eu.abas.cloud",
  "aws_region": "eu-central-1",
  "stage": "prod",
  "options": {
    "useSSH": true,
    "docker_host": "hostname",
    "cloud_connect_host": "hostname",
    "awslogsEnabled": "true"
  },
  "apps": {
    "screenFetcher": {
      "install": false,
      "generate_all_screens": false
    }
  },
  "add_ons": {
    "fts": {
      "install": false
    }
  },
  "services": {
    "environment": {},
    "license_server": {
      "enabled": true
    },
    "jwt": {
      "port": 19951,
      "userSyncMode": "full",
      "workspaces": "26a",
      "permissions": "26"
    },
    "workflow": {
      "host": "localhost",
      "port": 8088,
      "enabled": false
    },
    "bapps": {
      "host": "localhost",
      "port": 9990,
      "enabled": false
    },
    "search": {
      "host": "localhost",
      "port": 9200,
      "enabled": false
    },
    "erp": {
      "host": "hostname",
      "port": 6560,
      "user": null,
      "ssh": {
        "user": "s3",
        "port": 2205
      },
      "password": "sy"
    }
  }
}

Due to an open issue you have to add the following lines to your build.gradle file in order to have the test coverage calculated correctly:

test {
	jacoco {
		excludes += ['**/*']
	}
}

calculateCodeCoverage {
	...
	afterEvaluate {
		classDirectories = files(classDirectories.files.collect {
			fileTree(it).matching {
				include "de/abas/esdk/g30l0/**/*.class"
			}
		})
	}
}

codeCoverageVerification {
	afterEvaluate {
		classDirectories = files(classDirectories.files.collect {
			fileTree(it).matching {
				include "de/abas/esdk/g30l0/**/*.class"
			}
		})
	}
}