Fix /blueprints/freeze results

The dependencies are not sorted, so depending on what order they were
returned in the freeze route would or would not return the correct
results (exhibited by the version being the original glob instead of the
EVRA).

This also fixes the tests so that the depsolve results are slightly
unsorted by adding a dep-package3 to the start of the list.

internal/mocks/rpmmd/fixtures.go

@@ -155,6 +155,13 @@ func createBaseStoreFixture() *store.Store {
 
 func createBaseDepsolveFixture() []rpmmd.PackageSpec {
 	return []rpmmd.PackageSpec{
+		{
+			Name:    "dep-package3",
+			Epoch:   0,
+			Version: "3.0.3",
+			Release: "1.fc30",
+			Arch:    "x86_64",
+		},
 		{
 			Name:    "dep-package1",
 			Epoch:   0,

internal/weldr/api.go

@@ -898,8 +898,13 @@ func (api *API) blueprintsFreezeHandler(writer http.ResponseWriter, request *htt
 			errors = append(errors, rerr)
 			break
 		}
+		// Sort dependencies by Name (names should be unique so no need to sort by EVRA)
+		sort.Slice(dependencies, func(i, j int) bool {
+			return dependencies[i].Name < dependencies[j].Name
+		})
 
 		for pkgIndex, pkg := range blueprint.Packages {
+			// sort.Search requires the input to be sorted
 			i := sort.Search(len(dependencies), func(i int) bool {
 				return dependencies[i].Name >= pkg.Name
 			})