* This makes for better version comparison in distributions.
  In Debian, 3.0~rc1 < 3.0 < 3.0-rc1.
* Added version target to display computed version string
* Use the same variable for rpm and deb changelogs

RTSRoot now exposes only loaded modules and has no loaded_fabric_modules
property anymore, c.f. rtslib/a4930ad0b4beaa4a7b10e7e8f9389e618245fd60

Following rtslib/4f735bb86e8cef3de111d4ddff98695aeb35536e, we cannot use
RTSRoot.fabric_modules before loading the kernel modules.

To circumvent the problem, rtslib/93934a720968780b24ce03bb8e03d81f352d6662
introduced parse_specfile() and list_specfiles() which only require the
specfiles to be present on the system.

We used to mkdir the fabric modules configfs nodes after loading the kernel
modules. RTSLib does this already, so rely on it and remove that code from the
initscript.

When trying to stop an already stopped service, the initscript should succeed
and return 0. We now return 0 when trying to stop the target when
/sys/kernel/config/target does not exists. This also fixes a potential problem
when upgrading targetcli with the target stopped.

* In rtslib/61f72fd404eda5e263c2fd774db814dde5daa7cf, all module loading
  logic was removed from rtslib, and thus RTSRoot cannot be instanciated
  before the initscript loaded the target module.
* FabricModules.all() is a class method that only relies on specfiles

* Moved the configuration backup and dump logic to a separate class method:
  CliConfig.save_running_config()
* Using in both config mode commit and legacy mode saveconfig