Statistics: wrote unit tests
Frame: log modified bundles, fix error message
Added option to periodically dump performance stats to logs
Promote bcfg2-info to have it's own Options dict

Turns out that CLIENT_COMMON_OPTIONS and SERVER_COMMON_OPTIONS
conflict.  Adding ppath and max_copies (turns out the latter is also
necessary) to the bcfg2-info code directly seemed like a maintenance
problem waiting to happen, so I factored that out into a new
INFO_COMMON_OPTIONS dict.  That will keep any options parsing special
cases out of the bcfg2-info code hopefully be more maintainable
going forward.
fix bogus bundle_quick option handling in bcfg2_local.py
testsuite: fixed Probes test that uses version information