go: mark git as also being a runtime dependency

var/spack/repos/builtin/packages/go/package.py

@@ -25,7 +25,7 @@ class Go(Package):
     # to-do, make non-c self-hosting compilers feasible without backflips
     # should be a dep on external go compiler
     depends_on('go-bootstrap', type='build')
-    depends_on('git')
+    depends_on('git', type='alldeps')
 
     def install(self, spec, prefix):
         bash = which('bash')