Change db-path, create it during install

Fixes the issue that systemd could not start boltd because the
db path was missing.

bolt.spec

@@ -1,6 +1,6 @@
 Name: bolt
 Version: 0.1
-Release: 1%{?dist}
+Release: 2%{?dist}
 Summary: Thunderbolt device manager
 License: LGPLv2+
 URL: https://github.com/gicmo/bolt
@@ -35,7 +35,7 @@ mentioned tasks.
 cp %{SOURCE1} ./
 
 %build
-%meson
+%meson -Ddb-path=%{_localstatedir}/lib/boltd
 %meson_build
 
 %check
@@ -43,6 +43,8 @@ cp %{SOURCE1} ./
 
 %install
 %meson_install
+install -m0755 -d $RPM_BUILD_ROOT%{_localstatedir}/lib/boltd
+
 
 %post
 %systemd_post %{name}.service
@@ -66,7 +68,12 @@ cp %{SOURCE1} ./
 %{_datadir}/polkit-1/rules.d/org.freedesktop.bolt.rules
 %{_datadir}/dbus-1/system-services/org.freedesktop.bolt.service
 %{_mandir}/man1/boltctl.1*
+%dir %{_localstatedir}/lib/boltd
 
 %changelog
+* Sun Dec 17 2017 Christian Kellner <ckellner@redhat.com> - 0.1-2
+- Set database path to /var/lib/boltd, create it during
+  installation, which is needed for the service file to work.
+
 * Thu Dec 14 2017 Christian Kellner <ckellner@redhat.com> - 0.1-1
 - Initial upstream release