openpower: phosphor-rest: set append wildcard

For a recipe without a suffix piece, add wildcard to the append.  Next
will update the recipe.  Then update the append again.

Change-Id: I5a658941cd110a7125eaa1725db2c5c2262d648f
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/recipes-phosphor/interfaces/phosphor-rest.bbappend b/recipes-phosphor/interfaces/phosphor-rest%.bbappend
similarity index 100%
rename from recipes-phosphor/interfaces/phosphor-rest.bbappend
rename to recipes-phosphor/interfaces/phosphor-rest%.bbappend