const string for Version, Release, Confversion

The Version (e,g, 4.4 ), Release (git hash) and Confversion (e.g. 44)
must be compiled into the code so that they can't be changed during run
time and ensure this with the compiler

Signed-off-by: Christian Goll <cgoll@suse.com>

internal/pkg/version/version.go

@@ -11,8 +11,7 @@ import (
 Return the version of wwctl
 */
 func GetVersion() string {
-	conf := warewulfconf.Get()
-	return fmt.Sprintf("%s-%s", conf.Paths.Version(), conf.Paths.Release())
+	return fmt.Sprintf("%s-%s", warewulfconf.Version, warewulfconf.Release)
 }
 
 /*