create index and query dirs during install

[secure411dotorg]

Note in the time machine git repo under

timemachine/doc/howto.rst it tells that you must have the dirs exist. Also pcaps apparently get written to the queryfiledir:

  indexdir "<path>"
    Path, absolute or relative to 'workdir' (see above), where the 
    disk indexes will reside. This directory must exist upon timemachine startup.
    It is a performance gain to place the index database files on different
    disk than the class storage files.

  queryfiledir "<path>"
    Path, absolute or relative to 'workdir' (see above), where query result
    files will be created.  This directory must exist upon timemachine startup.