Increased Redis backup time to one per 25minutes.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>
Supported spawning more than one idependent scheduler task at once.  Also implemented protection against multiple spawn of cron tasks (only one invoke at time is allowed).

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>
Defined sha value for SvdSchedulerAction to allow multiple scheduler invocations and to have bit more control over them.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>
Implemented igniter constants support in scheduler.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>
Updated README. More info about current state of cron functionality and scheduler itself.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>