Adapt to API change in gerrit core

Gerrit core changed declared exceptions of RestSession methods in
I21bef286bbe3ea9e3fc819d8912a501d9350dc8a from IOException to Exception.

Change-Id: Ic19b18bc97bb8cdd7d3d96949ec8ff42e4dd978e

src/test/java/com/googlesource/gerrit/plugins/healthcheck/AbstractHealthCheckIntegrationTest.java

diff --git a/src/test/java/com/googlesource/gerrit/plugins/healthcheck/AbstractHealthCheckIntegrationTest.java b/src/test/java/com/googlesource/gerrit/plugins/healthcheck/AbstractHealthCheckIntegrationTest.java
index ff924e6..56f96fe 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/healthcheck/AbstractHealthCheckIntegrationTest.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/healthcheck/AbstractHealthCheckIntegrationTest.java
@@ -60,11 +60,11 @@
             plugin.getSysInjector().getInstance(Key.get(String.class, PluginName.class)));
   }
 
-  protected RestResponse getHealthCheckStatus() throws IOException {
+  protected RestResponse getHealthCheckStatus() throws Exception {
     return adminRestSession.get(healthCheckUriPath);
   }
 
-  protected RestResponse getHealthCheckStatusAnonymously() throws IOException {
+  protected RestResponse getHealthCheckStatusAnonymously() throws Exception {
     return anonymousRestSession.get(healthCheckUriPath);
   }