Removed unnecessary sleep from devstack plugin
Removed unnecessary sleep from devstack plugin

The step installing influxdb sleeps for a full minute before allowing
the plugin to progress.  The commented explanation is to wait for
influxdb to start, elect a leader and begin accepting connections.
However, the subsequent part of the process is to install various
packages (via apt and git) then build the java or python monasca-api
code.  The chances of that being done before a minute is out are low.
The sleep is therefore redundant and aggravating.

Change-Id: I985bede38890a0ab0abafc93bda0feaafe2fa99b

openstack/monasca-api,stackforge/monasca-api,openstack/monasca-api,stackforge/monasca-api,openstack/monasca-api,stackforge/monasca-api,sapcc/monasca-api,stackforge/monasca-api,sapcc/monasca-api,sapcc/monasca-api