[SPARK-18695] Bump master branch version to 2.2.0-SNAPSHOT

## What changes were proposed in this pull request?
This patch bumps master branch version to 2.2.0-SNAPSHOT.

## How was this patch tested?
N/A

Author: Reynold Xin <rxin@databricks.com>

Closes #16126 from rxin/SPARK-18695.

assembly/pom.xml

@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 

common/network-common/pom.xml

@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 

common/network-shuffle/pom.xml

@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 

common/network-yarn/pom.xml

@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 

common/sketch/pom.xml

@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 

common/tags/pom.xml

@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 

common/unsafe/pom.xml

@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 

core/pom.xml

@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 

docs/_config.yml

@@ -14,8 +14,8 @@ include:
 
 # These allow the documentation to be updated with newer releases
 # of Spark, Scala, and Mesos.
-SPARK_VERSION: 2.1.0-SNAPSHOT
-SPARK_VERSION_SHORT: 2.1.0
+SPARK_VERSION: 2.2.0-SNAPSHOT
+SPARK_VERSION_SHORT: 2.2.0
 SCALA_BINARY_VERSION: "2.11"
 SCALA_VERSION: "2.11.7"
 MESOS_VERSION: 1.0.0

examples/pom.xml

@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 

external/docker-integration-tests/pom.xml

@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 

external/flume-assembly/pom.xml

@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 

external/flume-sink/pom.xml

@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 

external/flume/pom.xml

@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 

external/java8-tests/pom.xml

@@ -20,7 +20,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 

external/kafka-0-10-assembly/pom.xml

@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 

external/kafka-0-10-sql/pom.xml

@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 

external/kafka-0-10/pom.xml

@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 

external/kafka-0-8-assembly/pom.xml

@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 

external/kafka-0-8/pom.xml

@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.spark</groupId>
     <artifactId>spark-parent_2.11</artifactId>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.2.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>