Removed "tools" as a module and made it standalone.

The "tools" project does not really belong to the devops project, so made it standalone and renamed its folder ot "tools".
Added git period variables to sling-orch.crank.txt.
Added the sample bundle that contains a service and a script.

Added the project of the sample bundle, of which two versions, in the form of JAR bundles, were provided before in the "resources" folder. The default version of the bundle is 0.0.1. To build the 0.0.2 version, with relevant source code modifications, the Maven profile "2" must be used (e.g. "mvn -P2 clean install") - source code is transformed appropriately before being compiled.
Updated Vagrantfile.

A Git repo is now created on the Orchestrator VM, which the Orchestrator watches. Minions fetch their crank files from the Orchestrator. In order to make config values predictable, commits made to the repo use fixed dates. Minion VMs still have C1 and C2 in the names, though actual config values are different. Orchestrator commits the first crank file itself, the second crank file is commited by the first C2 minion that comes up, via ssh.