sysroot: Move ostree_sysroot_origin_new_from_refspec here

Rather than having it live in admin.  This is useful for other
consumers like the test suite.

src/libostree/ostree-sysroot.c

@@ -1095,3 +1095,18 @@ ostree_sysroot_get_merge_deployment (OstreeSysroot     *self,
   return NULL;
 }
 
+/**
+ * ostree_sysroot_origin_new_from_refspec:
+ * @refspec: A refspec
+ *
+ * Returns: (transfer full): A new config file which sets @refspec as an origin
+ */
+GKeyFile *
+ostree_sysroot_origin_new_from_refspec (OstreeSysroot  *sysroot,
+                                        const char     *refspec)
+{
+  GKeyFile *ret = g_key_file_new ();
+  g_key_file_set_string (ret, "origin", "refspec", refspec);
+  return ret;
+}
+

src/libostree/ostree-sysroot.h

@@ -84,5 +84,9 @@ gboolean ostree_sysroot_deploy_one_tree (OstreeSysroot     *self,
 OstreeDeployment *ostree_sysroot_get_merge_deployment (OstreeSysroot     *self,
                                                        const char        *osname);
 
+
+GKeyFile *ostree_sysroot_origin_new_from_refspec (OstreeSysroot      *self,
+                                                  const char         *refspec);
+
 G_END_DECLS
 

src/ostree/ot-admin-builtin-deploy.c

@@ -97,7 +97,7 @@ ot_admin_builtin_deploy (int argc, char **argv, OstreeSysroot *sysroot, GCancell
     }
   else
     {
-      origin = ot_origin_new_from_refspec (refspec);
+      origin = ostree_sysroot_origin_new_from_refspec (sysroot, refspec);
     }
 
   if (!ostree_repo_resolve_rev (repo, refspec, FALSE, &revision, error))

src/ostree/ot-admin-functions.c

@@ -27,14 +27,6 @@
 #include "ostree.h"
 #include "libgsystem.h"
 
-GKeyFile *
-ot_origin_new_from_refspec (const char *refspec)
-{
-  GKeyFile *ret = g_key_file_new ();
-  g_key_file_set_string (ret, "origin", "refspec", refspec);
-  return ret;
-}
-
 gboolean
 ot_admin_require_booted_deployment_or_osname (OstreeSysroot       *sysroot,
                                               const char          *osname,

src/ostree/ot-admin-functions.h

@@ -27,8 +27,6 @@
 
 G_BEGIN_DECLS
 
-GKeyFile *ot_origin_new_from_refspec (const char *refspec);
-
 gboolean
 ot_admin_require_booted_deployment_or_osname (OstreeSysroot       *sysroot,
                                               const char          *osname,