FIX: Adding support for multiple client

Author: pfarkya

src/config.ts

@@ -58,7 +58,7 @@ function fileExists(filepath: string): boolean {
 export interface ApiType {}
 
 export class KubeConfig implements SecurityAuthentication {
-    private static authenticators: Authenticator[] = [
+    private authenticators: Authenticator[] = [
         new AzureAuth(),
         new GoogleCloudPlatformAuth(),
         new ExecAuth(),
@@ -596,7 +596,7 @@ export class KubeConfig implements SecurityAuthentication {
         if (!user) {
             return;
         }
-        let authenticator = KubeConfig.authenticators.find((elt: Authenticator) => {
+        let authenticator = this.authenticators.find((elt: Authenticator) => {
             return elt.isAuthProvider(user);
         });
 

src/config_test.ts

@@ -1345,7 +1345,7 @@ describe('KubeConfig', () => {
             // TODO: inject the exec command here?
             const opts = {} as RequestOptions;
             await config.applyToHTTPSOptions(opts);
-            const execAuthenticator = (KubeConfig as any).authenticators.find(
+            const execAuthenticator = (config as any).authenticators.find(
                 (authenticator) => authenticator instanceof ExecAuth,
             );
             deepStrictEqual(execAuthenticator.tokenCache.exec, JSON.parse(responseStr));