test: rename obsfate template alias

We will introduce an obsfate templatekw in the next patch that will conflict
with the obsfate template in the test file, rename the one in test file to
avoid this collision.

tests/test-obsmarker-template.t

@@ -17,7 +17,7 b' Global setup'
   > obsfateoperations = "{if(obsfateoperations(markers), " using {join(obsfateoperations(markers), ", ")}")}"
   > obsfateusers = "{if(obsfateusers(markers), " by {join(obsfateusers(markers), ", ")}")}"
   > obsfatedate = "{if(obsfatedate(markers), "{ifeq(min(obsfatedate(markers)), max(obsfatedate(markers)), " (at {min(obsfatedate(markers))|isodate})", " (between {min(obsfatedate(markers))|isodate} and {max(obsfatedate(markers))|isodate})")}")}"
-  > obsfate = "{obsfateverb}{obsfateoperations}{obsfatesuccessors}{obsfateusers}{obsfatedate}; "
+  > obsfatetempl = "{obsfateverb}{obsfateoperations}{obsfatesuccessors}{obsfateusers}{obsfatedate}; "
   > [alias]
   > tlog = log -G -T '{node|short}\
   >     {if(predecessors, "\n  Predecessors: {predecessors}")}\
@@ -27,7 +27,7 b' Global setup'
   >     {if(successorssets, "\n  Successors: {successorssets}")}\
   >     {if(successorssets, "\n  multi-line: {join(successorssets, "\n  multi-line: ")}")}\
   >     {if(successorssets, "\n  json: {successorssets|json}")}\n'
-  > fatelog = log -G -T '{node|short}\n{if(succsandmarkers, "  Obsfate: {succsandmarkers % "{obsfate}"} \n" )}'
+  > fatelog = log -G -T '{node|short}\n{if(succsandmarkers, "  Obsfate: {succsandmarkers % "{obsfatetempl}"} \n" )}'
   > fatelogjson = log -G -T '{node|short}\n{if(succsandmarkers, "  Obsfate: {succsandmarkers|json}\n")}'
   > EOF