Apply rpm version information to app_version filed in vars.config

This applies the _revision field in the RPM spec file to the
app_version template variable.  This fixes the issue where
RPMs would not show information for the `runner version` command
due to the env.sh not having the proper variables filled out.

The PKG_VERSION makefile variable is set to the _revision
variable which now gets added to the vars.config properly.

Fixes: #69

priv/templates/rpm/specfile

@@ -31,6 +31,8 @@ Obsoletes: {{package_name}}
 %define platform_lib_dir %{platform_base_dir}/lib
 %define platform_log_dir %{_localstatedir}/log/{{package_install_name}}
 
+
+# Setup vars.config like other platforms, but do it inside of spec file
 %prep
 %setup -q -n {{package_name}}-%{_revision}
 cat > rpm.vars.config <<EOF
@@ -50,9 +52,9 @@ cat > rpm.vars.config <<EOF
 {runner_patch_dir,  "%{platform_lib_dir}/{{package_patch_dir}}"}.
 {runner_user,       "{{package_install_user}}"}.
 {pipe_dir,          "%{_localstatedir}/run/{{package_install_name}}/"}.
+{app_version,       "%{_revision}"}.
 EOF
 
-
 %build
 OVERLAY_VARS="overlay_vars=../rpm.vars.config" make rel