YCP Killer: Apply changes needed for Ruby translation

This module needed few changes before it was possible to translate its
YCP files into Ruby. This commit performs them.

The commit is a result of running YCP Killer's "patch" command. The
history of the applied patch is available here:

  https://github.com/yast/ycp-killer/commits/master/patches/snapper.patch

See also:

  https://github.com/yast/ycp-killer

agent-snapper/conf/Makefile.am

@@ -1,7 +0,0 @@
-#
-# Makefile.am for .../agent-snapper/conf
-#
-
-scrconf_DATA = snapper.scr
-
-EXTRA_DIST = $(scrconf_DATA)

testsuite/Makefile.am

@@ -5,7 +5,7 @@
 #
 
 AUTOMAKE_OPTIONS = dejagnu
-EXTRA_DIST = $(wildcard tests/*.out) $(wildcard tests/*.err) $(wildcard tests/*.ycp) $(wildcard tests/*.yh)
+EXTRA_DIST = $(wildcard tests/*.out) $(wildcard tests/*.err) $(wildcard tests/*.rb)
 
 testsuite_prepare = @ydatadir@/testsuite/Makefile.testsuite
 

testsuite/tests/GetSnapshotPath.out

@@ -1,4 +1,5 @@
 Read	.snapper.path $["num":0] nil
+Log	Snapshot '0' was not found.
 Return	
 Read	.snapper.path $["num":0] "/snapshots/0/snapshot"
 Return	/snapshots/0/snapshot

testsuite/tests/ReadConfigs.out

@@ -2,6 +2,7 @@ Read	.snapper.configs []
 Return	[]
 Return	root
 Read	.snapper.configs nil
+Log	File /etc/sysconfig/snapper is not available.
 Return	["root"]
 Return	root
 Read	.snapper.configs ["opt", "var", "root"]

yast2-snapper.spec.in

@@ -8,6 +8,8 @@ BuildRequires:	libsnapper-devel >= 0.0.11
 BuildRequires:	yast2-core-devel >= 2.23.1
 BuildRequires:	libtool doxygen gcc-c++ perl-XML-Writer
 
+Requires:       yast2-ruby-bindings >= 1.0.0
+
 Summary:	YaST - file system snapshots review
 
 %description
@@ -25,7 +27,7 @@ YaST module for accessing and managing btrfs system snapshots
 %defattr(-,root,root)
 %dir @yncludedir@/snapper
 @yncludedir@/snapper/*
-@clientdir@/snapper.ycp
+@clientdir@/snapper.rb
 @moduledir@/Snapper.*
 @desktopdir@/snapper.desktop
 @scrconfdir@/*.scr