[PackageKit] Point ZYPPTMPDIR to home partition. Fixes JB#62835

Move the downloading-cache from /var/tmp to /home/.zypp-tmp
This reduces the root partition free space requirements during download.
This avoids moving the files from root to home partition after download.
The cache location is created at runtime if it doesn't exist.

rpm/PackageKit.spec

@@ -11,6 +11,7 @@ Source0:   http://www.freedesktop.org/software/PackageKit/releases/%{name}-%{ver
 Source100: rpm-db-clean.service
 Source101: pk-rpm-db-clean
 Source102: packagekit-zypp-override.conf
+Source103: packagekit.sysconfig
 
 Requires: PackageKit-zypp = %{version}-%{release}
 Requires: shared-mime-info
@@ -101,6 +102,9 @@ using PackageKit.
 # Create cache dir
 mkdir -p %{buildroot}%{_localstatedir}/cache/PackageKit
 
+# Environment file for libzypp
+install -D -m 0644 %{SOURCE103} %{buildroot}/%{_sysconfdir}/sysconfig/packagekit
+
 # delete unneeded things
 rm -r ${RPM_BUILD_ROOT}/%{_datadir}/PackageKit/helpers/test_spawn
 rm ${RPM_BUILD_ROOT}/%{_libdir}/packagekit-backend/libpk_backend_test_*.so
@@ -159,6 +163,7 @@ update-mime-database %{_datadir}/mime &> /dev/null || :
 %dir %{_libdir}/packagekit-backend
 %config %{_sysconfdir}/PackageKit/*.conf
 %config %{_sysconfdir}/dbus-1/system.d/*
+%config %{_sysconfdir}/sysconfig/packagekit
 %{_datadir}/polkit-1/actions/*.policy
 %{_datadir}/polkit-1/rules.d/org.freedesktop.packagekit.rules
 # applies only to some desktop distributions

rpm/packagekit.sysconfig

@@ -0,0 +1,2 @@
+PACKAGEKIT_ARGS="--keep-environment"
+ZYPPTMPDIR="/home/.zypp-tmp"