packaging: fix up spec file for non-python files

Correct the installation of the binary, logrotate conf, and init script.
Stop using INSTALLED_FILES. Instead explicitly list files and glob the
python package, as recommended by Fedora's python packaging guide.

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>

cli: add a default log file

Now that the packages include /var/log/ceph/radosgw-agent, default to
storing logs there, named after the configuration file or
radosgw-agent.log if no config file was used.

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>

debian: depend on python 2.6 or higher

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>

packaging: add logrotate config

There's no need to signal running agents since they use
a WatchedFileHandler that detects rotation itself.

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>

packaging: add init scripts

create log, run, and etc dirs as well

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>

packaging: add dependency on python-requests

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>