manifest/commit_server: pull in nginx

nginx is a requirement for this pipeline to work.

internal/distro/fedora/distro.go

@@ -94,9 +94,7 @@ var (
 		packageSets: map[string]packageSetFunc{
 			osPkgsKey: iotCommitPackageSet,
 			containerPkgsKey: func(t *imageType) rpmmd.PackageSet {
-				return rpmmd.PackageSet{
-					Include: []string{"nginx"},
-				}
+				return rpmmd.PackageSet{}
 			},
 		},
 		defaultImageConfig: &distro.ImageConfig{

internal/manifest/commit_server_tree.go

@@ -55,7 +55,7 @@ func NewOSTreeCommitServerTreePipeline(m *Manifest,
 }
 
 func (p *OSTreeCommitServerTreePipeline) getPackageSetChain() []rpmmd.PackageSet {
-	packages := []string{}
+	packages := []string{"nginx"}
 	return []rpmmd.PackageSet{
 		{
 			Include:      append(packages, p.ExtraPackages...),