Add fmtlib for phosphor-debug-collector

Call fmtlib to get additional information from journal.

Tested: built phosphor-debug-collector successfully
        and Unit Test passes.

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: Ibe65637a0b29b76269fb4bc3f498438901c9306a
diff --git a/test/meson.build b/test/meson.build
index 2f23272..8db5caa 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -36,6 +36,7 @@
                                     gmock_dep,
                                     dump,
                                     phosphor_logging_dep,
+                                    fmt_dep,
                                     cppfs]),
        workdir: meson.current_source_dir())
 endforeach