[Lint Issue] returning unexported type

* exported func NewClient returns unexported type *ctl.client,
   which can be annoying to use

Change-Id: Ica2a37e329321f2fa179bafa1215b43ff1cff96c

internal/integrations/ctl/airshipctl.go

@@ -37,18 +37,18 @@ type ctlPage struct {
 	ButtonText     string
 }
 
-// client provides a library of functions that enable external programs (e.g. Airship UI) to perform airshipctl
+// Client provides a library of functions that enable external programs (e.g. Airship UI) to perform airshipctl
 // functionality in exactly the same manner as the CLI.
-type client struct {
+type Client struct {
 	settings *environment.AirshipCTLSettings
 }
 
 // NewClient initializes the airshipctl client for external usage.
-func NewClient() *client {
+func NewClient() *Client {
 	settings := &environment.AirshipCTLSettings{}
 	settings.InitConfig()
 
-	c := &client{
+	c := &Client{
 		settings: settings,
 	}
 
@@ -56,7 +56,7 @@ func NewClient() *client {
 }
 
 // initilize the connection to airshipctl
-var c *client = NewClient()
+var c *Client = NewClient()
 
 // GetAirshipCTLVersion will kick out what version of airshipctl we're using
 func getAirshipCTLVersion() string {

internal/integrations/ctl/baremetal.go

@@ -55,7 +55,7 @@ func HandleBaremetalRequest(request configs.WsMessage) configs.WsMessage {
 	return response
 }
 
-func (c *client) generateIso() (string, error) {
+func (c *Client) generateIso() (string, error) {
 	var message string
 	err := isogen.GenerateBootstrapIso(c.settings)
 	if err == nil {

internal/integrations/ctl/config.go

@@ -54,7 +54,7 @@ func HandleConfigRequest(request configs.WsMessage) configs.WsMessage {
 }
 
 // GetCluster gets cluster information from the airshipctl config
-func (c *client) getCluster() []*config.Cluster {
+func (c *Client) getCluster() []*config.Cluster {
 	return c.settings.Config.GetClusters()
 }
 
@@ -78,7 +78,7 @@ func getClusterTableRows() string {
 }
 
 // GetContext gets cluster information from the airshipctl config
-func (c *client) getContext() []*config.Context {
+func (c *Client) getContext() []*config.Context {
 	return c.settings.Config.GetContexts()
 }
 
@@ -101,7 +101,7 @@ func getContextTableRows() string {
 }
 
 // GetCredential gets user credentials from the airshipctl config
-func (c *client) getCredential() []*config.AuthInfo {
+func (c *Client) getCredential() []*config.AuthInfo {
 	authinfo, err := c.settings.Config.GetAuthInfos()
 	if err != nil {
 		return []*config.AuthInfo{}

internal/integrations/ctl/document.go

@@ -49,7 +49,7 @@ func HandleDocumentRequest(request configs.WsMessage) configs.WsMessage {
 	return response
 }
 
-func (c *client) docPull() (string, error) {
+func (c *Client) docPull() (string, error) {
 	var message string
 	settings := pull.Settings{AirshipCTLSettings: c.settings}
 	err := settings.Pull()