##### SUMMARY
As of 2019-01-15 Maven Central now requires `https`. 

https://support.sonatype.com/hc/en-us/articles/360041287334

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
* maven_repository

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
It's in the build system. Full out not relevant.

ANSIBLE_VERSION=2.8.5
```

##### CONFIGURATION
<!--- Paste verbatim output from "ansible-config dump --only-changed" between quotes -->
```paste below
Not relevant
```

##### OS / ENVIRONMENT
<!--- Provide all relevant information below, e.g. target OS versions, network device firmware, etc. 
Ubuntu 18.04 CIS
-->


##### STEPS TO REPRODUCE
<!--- Describe exactly how to reproduce the problem, using a minimal test-case -->

Attempt to get an artifact from Maven Central using `http` instead of `https`

<!--- Paste example playbooks or commands between quotes below -->
```yaml
- name: Download latest agent from maven central
  maven_artifact:
    group_id: com.contrastsecurity
    artifact_id: contrast-agent
    version: "{{ contrast_agent_version }}"
    dest: "{{ contrast_agent_path }}/contrast/contrast.jar"
    owner: tomcat
    group: tomcat 
    mode: 0644
```

<!--- HINT: You can paste gist.github.com links for larger files -->

##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->

I expected the artifact to be copied to the AMI as it has done for years before this :-)

##### ACTUAL RESULTS
<!--- Describe what actually happened. If possible run with extra verbosity (-vvvv) -->

amazon-ebs: TASK [contrast : Download latest agent from maven central] *********************
    amazon-ebs: fatal: [teamserver-intuit-1579469195]: FAILED! => {"changed": false, "msg": "Failed to download artifact com.contrastsecurity:contrast-agent:3.6.9.11819 because of HTTP Error 501: HTTPS Requiredfor URL http://repo1.maven.org/maven2/com/contrastsecurity/contrast-agent/3.6.9.11819/contrast-agent-3.6.9.11819.jar"}
    amazon-ebs:
 
http://repo1.maven.org/maven2/com/contrastsecurity/contrast-agent/3.6.9.11819/contrast-agent-3.6.9.11819.jar

<!--- Paste verbatim command output between quotes -->
```paste below
Not sure what command you are referring to?
```

if artifact.version_by_spec:
            artifact.version = self.find_version_by_spec(artifact)
        if artifact.version == "latest":
            artifact.version = self.find_latest_version_available(artifact)
        if artifact.is_snapshot():
            if self.local:
                return self._uri_for_artifact(artifact, artifact.version)
            path = "/%s/%s" % (artifact.path(), self.metadata_file_name)
            content = self._getContent(self.base + path, "Failed to retrieve the maven metadata file: " + path)
            xml = etree.fromstring(content)
            for snapshotArtifact in xml.xpath("/metadata/versioning/snapshotVersions/snapshotVersion"):
                classifier = snapshotArtifact.xpath("classifier/text()")
                artifact_classifier = classifier[0] if classifier else ''
                extension = snapshotArtifact.xpath("extension/text()")
                artifact_extension = extension[0] if extension else ''
                if artifact_classifier == artifact.classifier and artifact_extension == artifact.extension:
                    return self._uri_for_artifact(artifact, snapshotArtifact.xpath("value/text()")[0])
            timestamp_xmlpath = xml.xpath("/metadata/versioning/snapshot/timestamp/text()")
            if timestamp_xmlpath:
                timestamp = timestamp_xmlpath[0]
                build_number = xml.xpath("/metadata/versioning/snapshot/buildNumber/text()")[0]
                return self._uri_for_artifact(artifact, artifact.version.replace("SNAPSHOT", timestamp + "-" + build_number))
        return self._uri_for_artifact(artifact, artifact.version)
    def _uri_for_artifact(self, artifact, version=None):