platform-ctrl login endpoint fix to create new cookie on microservice restart

	session, err := CookieStore.Get(r, "authCookie")

	if err != nil {

		log.Info(err.Error())

		// Patch until encryption keys are persisted

		// Try to renew the cookie

		if session != nil {

			session, err = CookieStore.New(r, "authCookie")

			if err != nil {

				http.Error(w, err.Error(), http.StatusInternalServerError)

			}

		} else {

		// Cookie decryption may fail on microservice restart due to

		// mismatch with newly created cookie store encryption keys (no persistence).

		// In this case use the newly generated session, if successfully created.

		if session == nil {

			http.Error(w, err.Error(), http.StatusInternalServerError)

			return

		}