Update timeutils.py from oslo

This fix is related to oslo-incubator commits:
3bc6f79d794aee9d51abc0be10e846b971fae847
af76064855c5bb888e1a0d2800d1f49470e19091
df3f2bafbe76d78d017d40e7dc08909fee7dbe34

Change-Id: I1194df94d85d3dde29e81003c0c3db735c66b35f
Remove .pyc files before generating sample conf.

Updates the generate_samples.sh script so that we remove
.pyc files in the nova source tree before generating the sample file.

If you don't run unit tests the .pyc files won't get regenerated.
This can cause cryptic errors if you run tests, switch branches,
and then try to regenerate your config files if there are module
differences, etc.

Change-Id: I784a22c1cd7fb2c69ea1d9e02f87bd7da19d76aa
Updated from global requirements

Change-Id: Ibc58e9a061a56e9d66ee0b4e08fa771845fb0595
Adds V3 API samples for the disk-config extension

Adds api sample tests and and api samples for the
disk-config extension

Partially implements blueprint v3-api-unittests
Partially implements blueprint v3-api-specification

Change-Id: Ic5c1e4d4e8c6edf3fceef456a79c1f5b79a3b5aa
Merge "Update timeutils.py from oslo"
Merge "Updated from global requirements"
Merge "Adds V3 API samples for the disk-config extension"
Merge "Remove .pyc files before generating sample conf."