[SPARK-11796] Fix httpclient and httpcore depedency issues related to docker-client

This commit fixes dependency issues which prevented the Docker-based JDBC integration tests from running in the Maven build.

Author: Mark Grover <mgrover@cloudera.com>

Closes #9876 from markgrover/master_docker.

docker-integration-tests/pom.xml

@@ -71,6 +71,18 @@
         </exclusion>
       </exclusions>
     </dependency>
+    <dependency>
+      <groupId>org.apache.httpcomponents</groupId>
+      <artifactId>httpclient</artifactId>
+      <version>4.5</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.httpcomponents</groupId>
+      <artifactId>httpcore</artifactId>
+      <version>4.4.1</version>
+      <scope>test</scope>
+    </dependency>
     <!-- Necessary in order to avoid errors in log messages: -->
     <dependency>
       <groupId>com.google.guava</groupId>
@@ -109,6 +121,16 @@
       <version>${project.version}</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>mysql</groupId>
+      <artifactId>mysql-connector-java</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.postgresql</groupId>
+      <artifactId>postgresql</artifactId>
+      <scope>test</scope>
+    </dependency>
     <!-- Jersey dependencies, used to override version.
      See https://github.com/apache/spark/pull/9503#issuecomment-154369560 for
      background on why we need to use a newer Jersey only in this test module;

pom.xml

@@ -810,8 +810,36 @@
             <artifactId>guava</artifactId>
             <groupId>com.google.guava</groupId>
           </exclusion>
+          <exclusion>
+            <groupId>org.apache.httpcomponents</groupId>
+            <artifactId>httpclient</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>org.apache.httpcomponents</groupId>
+            <artifactId>httpcore</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>commons-logging</groupId>
+            <artifactId>httpclient</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>commons-logging</groupId>
+            <artifactId>commons-logging</artifactId>
+          </exclusion>
         </exclusions>
       </dependency>
+      <dependency>
+        <groupId>mysql</groupId>
+        <artifactId>mysql-connector-java</artifactId>
+        <version>5.1.34</version>
+        <scope>test</scope>
+      </dependency>
+      <dependency>
+        <groupId>org.postgresql</groupId>
+        <artifactId>postgresql</artifactId>
+        <version>9.3-1102-jdbc41</version>
+        <scope>test</scope>
+      </dependency>
       <dependency>
         <groupId>org.apache.curator</groupId>
         <artifactId>curator-recipes</artifactId>

sql/core/pom.xml

@@ -91,13 +91,11 @@
     <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
-      <version>5.1.34</version>
       <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>org.postgresql</groupId>
       <artifactId>postgresql</artifactId>
-      <version>9.3-1102-jdbc41</version>
       <scope>test</scope>
     </dependency>
     <dependency>