Implemented support for cluster metrics monitors (#162) (#189)

* Implemented LocalUriInput component, and supporting methods. Implemented unit and integration tests for LocalUriInput. Refactored various other classes and components to support LocalUriInput.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Refactored learn more links to open new tabs.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Implemented default trigger conditions for API supported by the LocalUriInput feature.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Refactored button text and size based on UX reviewer feedback.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Added documentation link for cluster stats API.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Adjusted some wording based on UX reviewer feedback. Implemented modal that displays when changing request type.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Refactored feature assets to use ClusterMetrics naming convention instead of LocalUriInput.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Refactored behavior of cluster metrics clear triggers modal, and implemented tests.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Added periods to error messages.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Removed fixed width for clearTriggersModal.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Refactored the cluster metrics radio card to be a monitor type instead of monitor definition type. Refactored request type selection combobox so it's not clearable, and reworded the clearTriggersModal text and refactored tests accordingly.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Updated copyright headers.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Refactoring monitorType checking logic to accommodate cluster metrics monitors.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Refactored help text to use lowercase letters.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Implemented a helper method as a temporary solution to some incorrect formatting of cluster metrics monitors returned by the getMonitors API.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Refactored cluster metrics feature to remove support for CAT repositories.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Refactored cluster metrics request types labels to no longer reference CAT.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

* Adjusted the example trigger conditions for two request types.

Signed-off-by: AWSHurneyt <hurneyt@amazon.com>

cypress/fixtures/sample_cluster_metrics_monitor.json

@@ -0,0 +1,64 @@
+{
+  "name": "sample_cluster_metrics_health_monitor",
+  "type": "monitor",
+  "monitor_type": "cluster_metrics_monitor",
+  "enabled": true,
+  "schedule": {
+    "period": {
+      "unit": "MINUTES",
+      "interval": 1
+    }
+  },
+  "inputs": [
+    {
+      "uri": {
+        "api_type": "CLUSTER_HEALTH",
+        "path": "_cluster/health/",
+        "path_params": "",
+        "url": "http://localhost:9200/_cluster/health/"
+      }
+    }
+  ],
+  "triggers": [],
+  "ui_metadata": {
+    "schedule": {
+      "timezone": null,
+      "frequency": "interval",
+      "period": {
+        "unit": "MINUTES",
+        "interval": 1
+      },
+      "daily": 0,
+      "weekly": {
+        "tue": false,
+        "wed": false,
+        "thur": false,
+        "sat": false,
+        "fri": false,
+        "mon": false,
+        "sun": false
+      },
+      "monthly": {
+        "type": "day",
+        "day": 1
+      },
+      "cronExpression": "0 */1 * * *"
+    },
+    "search": {
+      "searchType": "clusterMetrics",
+      "timeField": "",
+      "aggregations": [],
+      "groupBy": [],
+      "bucketValue": 1,
+      "bucketUnitOfTime": "h",
+      "where": {
+        "fieldName": [],
+        "fieldRangeEnd": 0,
+        "fieldRangeStart": 0,
+        "fieldValue": "",
+        "operator": "is"
+      }
+    },
+    "monitor_type": "cluster_metrics_monitor"
+  }
+}