httpd is part of core images

[nouseforaname]

docker prefix doesn't work when we start the image. This PR will remove the prefix so that images can be started

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Checklist

Please provide the following information (and links if possible):

[ ] What component are you testing?

[ ] Is the component an default component in cf-deployment?

[ ] Have you created a TestCase and added it to the list of cases to be run?

[ ] Have you added any new properties/information to all of the following:

• [ ] integration_config.json: Specifically, an include_<testcase-name> property
• [ ] documentation in docs/
• [ ] tasks in ci/
• [ ] scripts in scripts/

[ ] Have you manually validated your TestCase against a deployed Cloud Foundry? If so, which version?

[ ] Does this change rely on a particular version of cf-deployment?

[ ] Are there any optional components of Cloud Foundry that should be enabled for this new TestCase to succeed? Are their presence checked for in the CheckDeployment method of your TestCase?

[ ] Are you available for a cross-team pair to help troubleshoot your PR? What timezones are you based in?

[ ] Have you submitted a pull-request to modify the cf-deployment backup and restore ops files to add a backup job and properties where appropriate?

Do you have any other useful information for us?

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[cf-gitbot]

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