Add --skip-tests to helmfile template command (#2057)

* Add skip-tests to helmfile template command

* Fix formatting

pkg/state/state.go

@@ -1307,6 +1307,7 @@ type TemplateOpts struct {
 	SkipCleanup       bool
 	OutputDirTemplate string
 	IncludeCRDs       bool
+	SkipTests         bool
 }
 
 type TemplateOpt interface{ Apply(*TemplateOpts) }
@@ -1385,6 +1386,10 @@ func (st *HelmState) TemplateReleases(helm helmexec.Interface, outputDir string,
 			flags = append(flags, "--include-crds")
 		}
 
+		if opts.SkipTests {
+			flags = append(flags, "--skip-tests")
+		}
+
 		if len(errs) == 0 {
 			if err := helm.TemplateRelease(release.Name, release.Chart, flags...); err != nil {
 				errs = append(errs, err)