ENH: In Situ Analysis Config Refresh Rate

This commit adds functionality to in situ analysis
framework s.t. the user can specify the rate at which
to refresh the config.
ENH: In Situ Analysis Config Refresh Rate

This commit adds functionality to in situ analysis
framework s.t. the user can specify the rate at which
to refresh the config.

From: George Zagaris <george.zagaris@kitware.com>

git-svn-id: https://svn.alcf.anl.gov/repos/DarkUniverse/hacc/trunk/cosmotools@1653 952bdfbe-fa2e-45c0-a9ae-ac90d4a62daf
Merge branch 'svn/trunk'