Make work with Gerrit core stable-2.10 branch.

The stable-2.10 branch for this plugin was forked from master
which failed to build against Gerrit core stable-2.10.  This
change is a fix to to make this plugin build and work against
Gerrit stable-2.10

The scenarios were manually verified:
1. Buck built the plugin and ran all tests without failure
2. Maven built and ran all tests without failure
3. Built a dependent its-plugin against its-base and verified that
it work as expected.  I used the its-storyboard plugin to test.

Change-Id: Ie492e9021bd61500fb2e2868f0951c0564bf82bd

pom.xml

diff --git a/pom.xml b/pom.xml
index 08dacb8..411534b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,7 +22,7 @@
   <groupId>com.googlesource.gerrit.plugins.its</groupId>
   <artifactId>its-base</artifactId>
   <packaging>jar</packaging>
-  <version>2.11-SNAPSHOT</version>
+  <version>2.10-SNAPSHOT</version>
   <name>Gerrit Code Review - Issue tracker support</name>
 
   <properties>

src/main/java/com/googlesource/gerrit/plugins/hooks/its/InitIts.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/hooks/its/InitIts.java b/src/main/java/com/googlesource/gerrit/plugins/hooks/its/InitIts.java
index 4c59b5c..d816801 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/hooks/its/InitIts.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/hooks/its/InitIts.java
@@ -16,11 +16,11 @@
 
 import com.google.common.base.Strings;
 import com.google.gerrit.common.data.RefConfigSection;
-import com.google.gerrit.pgm.init.api.AllProjectsConfig;
-import com.google.gerrit.pgm.init.api.AllProjectsNameOnInitProvider;
-import com.google.gerrit.pgm.init.api.InitStep;
-import com.google.gerrit.pgm.init.api.Section;
-import com.google.gerrit.pgm.init.api.ConsoleUI;
+import com.google.gerrit.pgm.init.AllProjectsConfig;
+import com.google.gerrit.pgm.init.AllProjectsNameOnInitProvider;
+import com.google.gerrit.pgm.init.InitStep;
+import com.google.gerrit.pgm.init.Section;
+import com.google.gerrit.pgm.util.ConsoleUI;
 
 import org.eclipse.jgit.errors.ConfigInvalidException;
 import org.eclipse.jgit.lib.Config;
@@ -61,7 +61,7 @@
 
   @Override
   public void postRun() throws IOException, ConfigInvalidException {
-    Config cfg = allProjectsConfig.load().getConfig();
+    Config cfg = allProjectsConfig.load();
     ui.message("\n");
     ui.header(itsDisplayName + " Integration");