HBASE-28983 Static resources are not loaded on REST web UI pages in dev mode

This way the `hbase-webapps/static` source directory (which holds JS, CSS, image files) is not duplicated anymore. It is only present under `hbase-server`. This directory is then coped by maven-resources-plugin to the target directory of the REST and Thrift projects.

For this deleted the static directory below the Thrift project.

Author: PDavid

hbase-rest/pom.xml

@@ -289,6 +289,29 @@
           <skipAssembly>true</skipAssembly>
         </configuration>
       </plugin>
+      <!-- Copy the static web resources (JS, CSS, images, etc.) from hbase-server sources -->
+      <plugin>
+        <artifactId>maven-resources-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>copy-static-resources</id>
+            <goals>
+              <goal>copy-resources</goal>
+            </goals>
+            <phase>generate-resources</phase>
+            <configuration>
+              <outputDirectory>${project.build.outputDirectory}/hbase-webapps/static</outputDirectory>
+              <outputDirectory>${project.build.directory}/hbase-webapps/static</outputDirectory>
+              <overwrite>true</overwrite>
+              <resources>
+                <resource>
+                  <directory>../hbase-server/src/main/resources/hbase-webapps/static</directory>
+                </resource>
+              </resources>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-jar-plugin</artifactId>

hbase-thrift/pom.xml

@@ -194,6 +194,29 @@
           <skipAssembly>true</skipAssembly>
         </configuration>
       </plugin>
+      <!-- Copy the static web resources (JS, CSS, images, etc.) from hbase-server sources -->
+      <plugin>
+        <artifactId>maven-resources-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>copy-static-resources</id>
+            <goals>
+              <goal>copy-resources</goal>
+            </goals>
+            <phase>generate-resources</phase>
+            <configuration>
+              <outputDirectory>${project.build.outputDirectory}/hbase-webapps/static</outputDirectory>
+              <outputDirectory>${project.build.directory}/hbase-webapps/static</outputDirectory>
+              <overwrite>true</overwrite>
+              <resources>
+                <resource>
+                  <directory>../hbase-server/src/main/resources/hbase-webapps/static</directory>
+                </resource>
+              </resources>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-jar-plugin</artifactId>