sdjournal: Added missing strings package.
sdjournal: Added missing strings package.

sdjournal failed to compile.

coreos/go-systemd,glerchundi/go-systemd,jareksm/go-systemd,faiq/go-systemd,jonboulle/go-systemd,endocode/go-systemd,brnv/go-systemd,glerchundi/go-systemd,jareksm/go-systemd,endocode/go-systemd,jonboulle/go-systemd,brnv/go-systemd,coreos/go-systemd,faiq/go-systemd