subtests.docker_cli.run_attach: Fix the commands

Accedentally I put the \nexit\n in different command.

Signed-off-by: Lukáš Doktor <ldoktor@redhat.com>
index.rst: Fix/add descriptions in index.rst and bad docstring

Signed-off-by: Lukáš Doktor <ldoktor@redhat.com>
subtests.docker_cli: Remove build_paths test

This test is superseded by docker_cli/build test, which now supports
various locations too plus it does deeper postprocess.

Signed-off-by: Lukáš Doktor <ldoktor@redhat.com>
Merge pull request #303 from ldoktor/fixups

Couple of mixed fixups
Docs: Separate subtest section

*  Moved everything except the examples into
   a separate ``subtests.rst`` file.
*  Updated the content of the subtests section
   including adding more details about the
   sub-subtest mechanism.

Signed-off-by: Chris Evich <cevich@redhat.com>
Docs: Update example docstrings to new standard format

Signed-off-by: Chris Evich <cevich@redhat.com>
Docs: Merge old subtest docs into docstrings w/ new format

Contents of ``subtests.rst`` were moved/merged into the
main module docstrings for each subtest.

Signed-off-by: Chris Evich <cevich@redhat.com>