supports backend storage in in-memory storage
remove Samples() Percentiles() from influxdb driver
remove Samples() Percentiles() from bigquery storage driver
panic->error
remove debug code
delete data from influxdb after unit test
glog.Infof()
remove string rep of time
parenthesis.
Merge pull request #218 from monnand/write-only-storage

Write only storage: Part 1
Prepare housekeeping interval to be dynamic.

Change housekeeping to be from a fixed interval to a possibly varied
interval decided by nextHousekeeping().
Remove memory storage driver and make empty the default.

This fixes the current cAdvisor HEAD.
Merge pull request #221 from vmarmol/fix

Remove memory storage driver and make empty the default.
Merge pull request #222 from vmarmol/variable-housekeeping

Prepare housekeeping interval to be dynamic.
Make housekeeping interval dynamic, fist signal is resource usage.

If no resources are used by the container since the last housekeeping,
we double the housekeeping interval until --max_housekeeping_interval.
If usage was detected, we drop it back to the baseline
(--housekeeping_interval).

From my tests this reduces CPU usage in CoreOS from ~8% to ~3% with no
real loss of accuracy.

Fixes #159
Cleanup graph JS and don't show values below 0.
Updating libcontainer version.

This includes a fix which reduces CPU usage by ~30%.
Merge pull request #228 from vmarmol/update-libcontainer

Updating libcontainer version.
Adding the pprof HTTP service to cAdvisor.

This does not consume any resources unless the resources are queried.
Merge pull request #229 from vmarmol/pprof

Adding the pprof HTTP service to cAdvisor.