Fixed creation of vagrant boxes for virtualbox provider

vagrant's VBoxManage requires boxes containing ovf metadata
which kiwi did not provide. This commit changes the raw box
contents to match these requirements (github: #374)
Merge pull request #375 from openSUSE/review_140723_vagrant_virtualbox_box

Fixed creation of vagrant boxes for virtualbox provider
- v5.06.133 released
- Fixed use of repo URI with credentials information
  If there is no ?credentials= tag in the repo URI kiwi uses the
  default credentials file name 'kiwiRepoCredentials' and does
  not fail using an uninitialized value $credFile
- Fixed setup of object variable originXMLPath
  According to the XML read code moved from KIWIBoot into a function
  KIWIGlobals::readXMLFromImage the path information was stored in
  the wrong module. This had an impact to the search path of the
  editbootinstall/editbootconfig scripts so that they were not
  found anymore if specified relatively to the origin of the XML
  description
- v5.06.134 released
- fail when a product plugin dir is configured, but does not exist
Merge pull request #376 from adrianschroeter/master

- fail when a product plugin dir is configured, but does not exist
avoid warnings when an info value is unset
avoid warnings when rpm-md repos are disabled
- Fixed --help output for disk-alignment
  The option value must be given in KBytes but the help did
  not explain that and the default value information used the
  wrong unit too
fix open3 usage
Merge pull request #377 from adrianschroeter/master

- Avoid unexpected warnings in product media code
- Support LUKS extension with LVM
- Add info messages for intermediate steps when creating the
  disk layout such like information about creation of md raid
  or luks extensions
- Call cryptsetup in one central encoding function in
  KIWIBoot for disk based images
- Added check for given type name on the commandline compared to
  the selected build type in the checkType global function.
  If the commandline specified type is valid but not specified
  in the configuration kiwi exits
- Don't call losetup with stderr redirected to stdout if the
  show option is used. potential error messages could then
  affect the standard output
- Make sure LUKS encoding is not applied if the given device
  already contains a LUKS container
- Fixed OEM installer for LVM on LUKS images