Fix templatedir argument
Fix templatedir argument

The argument is a single template, not a directory.

Change-Id: I7a000d9ed09fd445c9ade3388193d5aa190a7809
Signed-off-by: Brad Bishop <713d098c0be4c8fd2bf36a94cd08699466677ecd@fuzziesquirrel.com>

openbmc/phosphor-inventory-manager,openbmc/phosphor-inventory-manager