Use new data for Defconfig documents.
Use new data for Defconfig documents.

  * Extend functions in docimport to set new data for defconfig
    documents.
  * Fix tests.

kernelci/kernelci-backend,kernelci/kernelci-backend,joyxu/kernelci-backend,joyxu/kernelci-backend,joyxu/kernelci-backend