tests/lcitool: Allow lcitool-refresh in out-of-tree builds, too

When running "make lcitool-refresh" in an out-of-tree build, it
currently fails with an error message from git like this:

 fatal: not a git repository (or any parent up to mount point /)
 Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).

Fix it by changing to the source directory first before updating
the submodule.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220201085554.85733-1-thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220204204335.1689602-15-alex.bennee@linaro.org>

tests/lcitool/Makefile.include

@@ -13,5 +13,5 @@ lcitool:
 lcitool-help: lcitool
 
 lcitool-refresh:
-	$(call quiet-command, git submodule update --init $(SRC_PATH)/tests/lcitool/libvirt-ci)
+	$(call quiet-command, cd $(SRC_PATH) && git submodule update --init tests/lcitool/libvirt-ci)
 	$(call quiet-command, $(LCITOOL_REFRESH))