What is it they say about the best-laid plans? Less than three years ago, when a Dublin private equity house swooped in to take control of Keating Construction, the plan was to propel the marine engineering specialist to the next level.   With revenues of €69 million and earnings of €7.7 million in 2018, the company already ranked as one of the top 50 construction companies in the country. However, by diversifying into higher-margin UK and European markets, CBD Capital wanted to drive revenues to €150 million by 2025, with the target to increase earnings to €12 million. Now, however,…