[Ingest Manager] Use DockerServers service in integration tests.

vars/kibanaPipeline.groovy

@@ -21,6 +21,7 @@ def functionalTestProcess(String name, Closure closure) {
     def kibanaPort = "61${processNumber}1"
     def esPort = "61${processNumber}2"
     def esTransportPort = "61${processNumber}3"
+    def ingestManagementPackageRegistryPort = "61${processNumber}4"
 
     withEnv([
       "CI_PARALLEL_PROCESS_NUMBER=${processNumber}",
@@ -29,6 +30,7 @@ def functionalTestProcess(String name, Closure closure) {
       "TEST_KIBANA_URL=http://elastic:changeme@localhost:${kibanaPort}",
       "TEST_ES_URL=http://elastic:changeme@localhost:${esPort}",
       "TEST_ES_TRANSPORT_PORT=${esTransportPort}",
+      "INGEST_MANAGEMENT_PACKAGE_REGISTRY_PORT=${ingestManagementPackageRegistryPort}",
       "IS_PIPELINE_JOB=1",
       "JOB=${name}",
       "KBN_NP_PLUGINS_BUILT=true",

x-pack/scripts/functional_tests.js

@@ -52,6 +52,7 @@ const onlyNotInCoverageTests = [
   require.resolve('../test/endpoint_api_integration_no_ingest/config.ts'),
   require.resolve('../test/reporting_api_integration/config.js'),
   require.resolve('../test/functional_embedded/config.ts'),
+  require.resolve('../test/ingest_manager_api_integration/config.ts'),
 ];
 
 require('@kbn/plugin-helpers').babelRegister();