refactor(gitlabci-includes): use autoReplace

lib/manager/gitlabci-include/index.ts

 import { extractPackageFile } from './extract';
-import { updateDependency } from './update';
 
-export { extractPackageFile, updateDependency };
+export { extractPackageFile };
+
+export const autoReplace = true;
 
 export const defaultConfig = {
   fileMatch: ['^\\.gitlab-ci\\.yml$'],

lib/manager/gitlabci-include/update.spec.ts

-import { readFileSync } from 'fs';
-import { updateDependency } from './update';
-
-const yamlFile = readFileSync(
-  'lib/manager/gitlabci-include/__fixtures__/gitlab-ci.yaml',
-  'utf8'
-);
-
-describe('manager/gitlabci-include/update', () => {
-  describe('updateDependency', () => {
-    it('replaces existing value', () => {
-      const upgrade = {
-        depType: 'repository',
-        depName: 'mikebryant/include-source-example',
-        newValue: '1.0.1',
-      };
-      const res = updateDependency({ fileContent: yamlFile, upgrade });
-      expect(res).not.toEqual(yamlFile);
-      expect(res.includes(upgrade.newValue)).toBe(true);
-    });
-    it('returns same', () => {
-      const upgrade = {
-        depType: 'repository',
-        depName: 'mikebryant/include-source-example',
-        newValue: '1.0.0',
-      };
-      const res = updateDependency({ fileContent: yamlFile, upgrade });
-      expect(res).toEqual(yamlFile);
-    });
-    it('returns null if error', () => {
-      const res = updateDependency({ fileContent: null, upgrade: null });
-      expect(res).toBeNull();
-    });
-  });
-});

lib/manager/gitlabci-include/update.ts

-import YAWN from 'yawn-yaml/cjs';
-import { logger } from '../../logger';
-import { UpdateDependencyConfig } from '../common';
-
-export function updateDependency({
-  fileContent,
-  upgrade,
-}: UpdateDependencyConfig): string | null {
-  try {
-    const { depName, newValue } = upgrade;
-
-    const yawn = new YAWN(fileContent);
-
-    const doc = yawn.json;
-
-    for (const includeObj of doc.include) {
-      if (
-        includeObj.project &&
-        includeObj.ref &&
-        includeObj.project === depName
-      ) {
-        includeObj.ref = newValue;
-      }
-    }
-
-    yawn.json = doc;
-
-    return yawn.yaml;
-  } catch (err) {
-    logger.debug({ err }, 'Error setting new .gitlab-ci.yml include value');
-    return null;
-  }
-}