Remove accesses to transition parameters

This fixes this deprecation:
https://deprecations-app-prod.herokuapp.com/deprecations/v3.x/#toc_transition-state

app/routes/basic.js

@@ -32,13 +32,10 @@ export default Route.extend({
   },
 
   redirectToProfile(transition) {
-    // make this hack the least invasive it can be
     let { targetName } = transition;
-    let { params } = transition;
+    let { owner } = this.paramsFor('owner');
     if (targetName === 'owner.repositories' &&
-      params.owner &&
-      params.owner.owner &&
-      params.owner.owner === 'profile') {
+      owner === 'profile') {
       this.transitionTo('account', {
         queryParams: { offset: 0 }
       });

app/routes/owner/repositories.js

@@ -16,7 +16,7 @@ export default TravisRoute.extend({
   model({ page }, transition) {
     const limit = config.pagination.profileReposPerPage;
     const offset = (page - 1) * limit;
-    const owner = transition.params.owner.owner;
+    const owner = this.paramsFor('owner').owner;
     const type = 'byOwner';
     const sort_by = 'default_branch.last_build:desc'; // eslint-disable-line
 

app/routes/owner/running.js

@@ -12,7 +12,7 @@ export default TravisRoute.extend({
   model(params, transition) {
     let includes =
       '?include=user.repositories,organization.repositories,build.commit,repository.active';
-    let { owner } = transition.params.owner;
+    let { owner } = this.paramsFor('owner');
     return $.ajax({
       url: `${config.apiEndpoint}/owner/${owner}${includes}`,
       headers: {

app/routes/profile.js

@@ -9,8 +9,8 @@ const SECTION_ROUTE_MAP = {
 export default TravisRoute.extend({
   accounts: service(),
 
-  beforeModel({ params, targetName }) {
-    const { section, login } = params[targetName] || {};
+  beforeModel({ targetName }) {
+    const { section, login } = this.paramsFor('profile') || {};
     const isUserAccount = this.accounts.user.login === login;
     const root = isUserAccount ? 'account' : 'organization';