FLUME-3466: Remove morphline-solr-sink module (moved to its own repo) (#426)

The Morphline Solr Sink has been split out of the Flume monorepo into
its own repository:

  https://github.com/apache/logging-flume-morphline

This removes the duplicated in-tree copy under `flume-ng-sinks/flume-ng-morphline-solr-sink`.

Author: ppkarwasz

flume-bom/pom.xml

@@ -45,7 +45,7 @@ limitations under the License.
     <flume-tools.version>1.11.1-SNAPSHOT</flume-tools.version>
     <flume-twitter.version>2.0.0-SNAPSHOT</flume-twitter.version>
     <flume-legacy.version>2.0.0-SNAPSHOT</flume-legacy.version>
-    <morphline.version>1.11.1-SNAPSHOT</morphline.version>
+    <flume-morphline.version>2.0.0-SNAPSHOT</flume-morphline.version>
   </properties>
 
   <dependencyManagement>
@@ -167,9 +167,9 @@ limitations under the License.
         <version>${flume-legacy.version}</version>
       </dependency>
       <dependency>
-        <groupId>org.apache.flume.flume-ng-sinks</groupId>
-        <artifactId>flume-ng-morphline-solr-sink</artifactId>
-        <version>${morphline.version}</version>
+        <groupId>org.apache.flume</groupId>
+        <artifactId>flume-morphline-solr-sink</artifactId>
+        <version>${flume-morphline.version}</version>
       </dependency>
       <dependency>
         <groupId>org.apache.flume</groupId>

flume-ng-dist/pom.xml

@@ -149,8 +149,8 @@
       <artifactId>flume-http-sink</artifactId>
     </dependency>
     <dependency>
-      <groupId>org.apache.flume.flume-ng-sinks</groupId>
-      <artifactId>flume-ng-morphline-solr-sink</artifactId>
+      <groupId>org.apache.flume</groupId>
+      <artifactId>flume-morphline-solr-sink</artifactId>
     </dependency>
     <dependency>
       <groupId>org.apache.flume</groupId>