AMBARI-18083. Service and component lists are not cut by max-height (onechiporenko)

ambari-web/app/styles/alerts.less

@@ -664,3 +664,8 @@
   font-family: FontAwesome;
   content: "\f011";
 }
+
+.alert-definition-filter-list {
+  max-height: 200px;
+  overflow-y: scroll;
+}

ambari-web/app/templates/main/alerts/add_definition_to_group_popup.hbs

@@ -42,8 +42,8 @@
                           href="#" {{bindAttr disabled="view.isDisabled"}}>
                     {{t common.service}}
                     <span class="caret"></span>
-                  </button>
-                  <ul class="dropdown-menu">
+                </button>
+                <ul class="dropdown-menu alert-definition-filter-list">
                     <!-- dropdown menu links -->
                     {{#each service in view.filterServices}}
                       <li>
@@ -67,8 +67,8 @@
                           href="#" {{bindAttr disabled="view.isDisabled"}}>
                     {{t common.component}}
                     <span class="caret"></span>
-                  </button>
-                  <ul class="dropdown-menu">
+                </button>
+                <ul class="dropdown-menu alert-definition-filter-list">
                     <!-- dropdown menu links -->
                     {{#each component in view.filterComponents}}
                       <li>