bump version to v3.18.0

(cherry picked from commit 74c3d1dc0de0335f941362c80447871e7d6bc78e)
Signed-off-by: Robert Sirchia <rsirchia@outlook.com>

cmd/helm/testdata/output/version-client-shorthand.txt

@@ -1 +1 @@
-version.BuildInfo{Version:"v3.17", GitCommit:"", GitTreeState:"", GoVersion:""}
+version.BuildInfo{Version:"v3.18", GitCommit:"", GitTreeState:"", GoVersion:""}

cmd/helm/testdata/output/version-client.txt

@@ -1 +1 @@
-version.BuildInfo{Version:"v3.17", GitCommit:"", GitTreeState:"", GoVersion:""}
+version.BuildInfo{Version:"v3.18", GitCommit:"", GitTreeState:"", GoVersion:""}

cmd/helm/testdata/output/version-short.txt

@@ -1 +1 @@
-v3.17
+v3.18

cmd/helm/testdata/output/version-template.txt

@@ -1 +1 @@
-Version: v3.17
+Version: v3.18

cmd/helm/testdata/output/version.txt

@@ -1 +1 @@
-version.BuildInfo{Version:"v3.17", GitCommit:"", GitTreeState:"", GoVersion:""}
+version.BuildInfo{Version:"v3.18", GitCommit:"", GitTreeState:"", GoVersion:""}

internal/version/version.go

@@ -29,7 +29,7 @@ var (
 	//
 	// Increment major number for new feature additions and behavioral changes.
 	// Increment minor number for bug fixes and performance enhancements.
-	version = "v3.17"
+	version = "v3.18"
 
 	// metadata is extra build time data
 	metadata = ""

pkg/chartutil/capabilities_test.go

@@ -62,8 +62,8 @@ func TestDefaultCapabilities(t *testing.T) {
 func TestDefaultCapabilitiesHelmVersion(t *testing.T) {
 	hv := DefaultCapabilities.HelmVersion
 
-	if hv.Version != "v3.17" {
-		t.Errorf("Expected default HelmVersion to be v3.17, got %q", hv.Version)
+	if hv.Version != "v3.18" {
+		t.Errorf("Expected default HelmVersion to be v3.18, got %q", hv.Version)
 	}
 }