Minor: Move trogdor out of tools and into its own gradle module (#10539)

Move Trogdor out of tools and into its own gradle module.  This allows us to minimize
the dependencies of the tools module.  We still keep Trogdor in the CLASSPATH
created by kafka-run-class.sh.

Reviewers: Colin P. McCabe <cmccabe@apache.org>

bin/kafka-run-class.sh

@@ -159,6 +159,18 @@ do
   CLASSPATH="$CLASSPATH:$dir/*"
 done
 
+for file in "$base_dir"/trogdor/build/libs/trogdor-*.jar;
+do
+  if should_include_file "$file"; then
+    CLASSPATH="$CLASSPATH":"$file"
+  fi
+done
+
+for dir in "$base_dir"/trogdor/build/dependant-libs-${SCALA_VERSION}*;
+do
+  CLASSPATH="$CLASSPATH:$dir/*"
+done
+
 for cc_pkg in "api" "transforms" "runtime" "file" "mirror" "mirror-client" "json" "tools" "basic-auth-extension"
 do
   for file in "$base_dir"/connect/${cc_pkg}/build/libs/connect-${cc_pkg}*.jar;

build.gradle

@@ -983,6 +983,8 @@ project(':core') {
     from(project.siteDocsTar) { into("site-docs/") }
     from(project(':tools').jar) { into("libs/") }
     from(project(':tools').configurations.runtimeClasspath) { into("libs/") }
+    from(project(':trogdor').jar) { into("libs/") }
+    from(project(':trogdor').configurations.runtimeClasspath) { into("libs/") }
     from(project(':shell').jar) { into("libs/") }
     from(project(':shell').configurations.runtimeClasspath) { into("libs/") }
     from(project(':connect:api').jar) { into("libs/") }
@@ -1468,6 +1470,49 @@ project(':storage') {
 project(':tools') {
   archivesBaseName = "kafka-tools"
 
+  dependencies {
+    implementation project(':clients')
+    implementation project(':log4j-appender')
+    implementation libs.argparse4j
+    implementation libs.jacksonDatabind
+    implementation libs.jacksonJDK8Datatypes
+    implementation libs.slf4jApi
+    implementation libs.log4j
+
+    implementation libs.jacksonJaxrsJsonProvider
+
+    testImplementation project(':clients')
+    testImplementation libs.junitJupiter
+    testImplementation project(':clients').sourceSets.test.output
+    testImplementation libs.mockitoInline // supports mocking static methods, final classes, etc.
+
+    testRuntimeOnly libs.slf4jlog4j
+  }
+
+  javadoc {
+    enabled = false
+  }
+
+  tasks.create(name: "copyDependantLibs", type: Copy) {
+    from (configurations.testRuntimeClasspath) {
+      include('slf4j-log4j12*')
+      include('log4j*jar')
+    }
+    from (configurations.runtimeClasspath) {
+      exclude('kafka-clients*')
+    }
+    into "$buildDir/dependant-libs-${versions.scala}"
+    duplicatesStrategy 'exclude'
+  }
+
+  jar {
+    dependsOn 'copyDependantLibs'
+  }
+}
+
+project(':trogdor') {
+  archivesBaseName = "trogdor"
+
   dependencies {
     implementation project(':clients')
     implementation project(':log4j-appender')

settings.gradle

@@ -50,4 +50,5 @@ include 'clients',
     'streams:upgrade-system-tests-25',
     'streams:upgrade-system-tests-26',
     'streams:upgrade-system-tests-27',
-    'tools'
+    'tools',
+    'trogdor'