fix(custom git trigger): fixed init

correctly added in default parameters for config

[TESTING -> locally with docker]

Issue: https://www.pivotaltracker.com/story/show/145071887

- [ ] It works!
- [ ] Comments provide sufficient explanations for the next contributor
- [ ] Tests cover changes and corner cases
- [ ] Follows Quay syntax patterns and format

static/js/directives/ui/manage-trigger-custom-git/manage-trigger-custom-git.component.html

@@ -31,7 +31,7 @@
       <div class="col-lg-7 col-md-7 col-sm-12 main-col">
         <h3>Select build context directory</h3>
         <strong>Please select the build context directory under the git repository:</strong>
-        <input class="form-control" type="text" placeholder="/"
+        <input class="form-control" type="text"
                ng-model="$ctrl.config.context"
                ng-pattern="/^($|\/|\/.+)/">
       </div>
@@ -50,7 +50,7 @@
       <div class="col-lg-7 col-md-7 col-sm-12 main-col">
         <h3>Select dockerfile path</h3>
         <strong>Please select the build context directory under the git repository:</strong>
-        <input class="form-control" type="text" placeholder="{{ $ctrl.config.context }}"
+        <input class="form-control" type="text"
                ng-model="$ctrl.config.dockerfile_path"
                ng-pattern="/^($|\/|\/.+)/">
       </div>