Description of problem:
--transdir in zanata-python-client-1.2.6 does not actually search the given  directory, but the subdirectory of the given directory.

For example, given: --transdir=.
./*.po files won't be looked, but
po/*.po files.

Version-Release number of selected component (if applicable):
1.2.6

How reproducible:
Always

Steps to Reproduce:
1. git-clone git://github.com/definite/ibus-chewing.git
2. cd ibus-chewing/po
3. zanata po push --transdir=. --srcdir=. --import-po
  
Actual results:
error: Can not find the zh_TW translation for ibus-chewing                                                     
error: Can not find the zh_CN translation for ibus-chewing

Expected results:
Successfully pushed.