Use a valid user name (lowercase) in examples

Signed-off-by: Silvin Lubecki <silvin.lubecki@docker.com>

Author: silvin-lubecki

e2e/commands_test.go

@@ -100,7 +100,7 @@ name: app-test
 # A short description of the application
 description: my cool app
 # Namespace to use when pushing to a registry. This is typically your Hub username.
-#namespace: myHubUsername
+#namespace: myhubusername
 # List of application maintainers with name and email for each
 maintainers:
   - name: bob

e2e/testdata/init-singlefile.dockerapp

@@ -6,7 +6,7 @@ name: tac
 # A short description of the application
 description: my cool app
 # Namespace to use when pushing to a registry. This is typically your Hub username.
-#namespace: myHubUsername
+#namespace: myhubusername
 # List of application maintainers with name and email for each
 maintainers:
   - name: bob

examples/hello-world/README.md

@@ -22,7 +22,7 @@ name: hello-world
 # A short description of the application
 description:
 # Namespace to use when pushing to a registry. This is typically your Hub username.
-#namespace: myHubUsername
+#namespace: myhubusername
 # List of application maintainers with name and email for each
 maintainers:
   - name: user

examples/hello-world/hello-world.dockerapp

@@ -6,7 +6,7 @@ name: hello-world
 # A short description of the application
 description: "Hello, World!"
 # Namespace to use when pushing to a registry. This is typically your Hub username.
-namespace: myHubUsername
+namespace: myhubusername
 # List of application maintainers with name and email for each
 maintainers:
   - name: user

examples/voting-app/voting-app.dockerapp/metadata.yml

@@ -5,7 +5,7 @@ name: voting-app
 # A short description of the application
 description: "Dogs or cats?"
 # Namespace to use when pushing to a registry. This is typically your Hub username.
-namespace: myHubUsername
+namespace: myhubusername
 # List of application maintainers with name and email for each
 maintainers:
   - name: user

internal/packager/init.go

@@ -192,7 +192,7 @@ name: {{ .Name }}
 # A short description of the application
 description: {{ .Description }}
 # Namespace to use when pushing to a registry. This is typically your Hub username.
-{{ if len .Namespace}}namespace: {{ .Namespace }} {{ else }}#namespace: myHubUsername{{ end }}
+{{ if len .Namespace}}namespace: {{ .Namespace }} {{ else }}#namespace: myhubusername{{ end }}
 # List of application maintainers with name and email for each
 {{ if len .Maintainers }}maintainers:
 {{ range .Maintainers }}  - name: {{ .Name  }}

internal/packager/init_test.go

@@ -107,7 +107,7 @@ name: writemetadata_test
 # A short description of the application
 description: 
 # Namespace to use when pushing to a registry. This is typically your Hub username.
-#namespace: myHubUsername
+#namespace: myhubusername
 # List of application maintainers with name and email for each
 maintainers:
   - name: bearclaw

types/types_test.go

@@ -217,7 +217,7 @@ func TestWithAttachmentsIncludingNestedCoreFiles(t *testing.T) {
 func TestValidateBrokenMetadata(t *testing.T) {
 	r := strings.NewReader(`#version: 0.1.0-missing
 name: _INVALID-name
-namespace: myHubUsername
+namespace: myhubusername
 maintainers:
     - name: user
       email: user@email.com