MAGETWO-59661: [Github] PHP7 returns types incompatible with generate code #6106

 - Updated Zend Code library to 3.x version and it dependencies
 - Refactored code generators to support PHP 7.x features
 - Refactored Setup module for new Zend Service Manager
 - Covered code generators by tests

Author: YevSent

composer.json

@@ -9,31 +9,31 @@
     ],
     "require": {
         "php": "~5.6.5|7.0.2|7.0.4|~7.0.6",
-        "zendframework/zend-stdlib": "~2.4.6",
-        "zendframework/zend-code": "~2.4.6",
-        "zendframework/zend-server": "~2.4.6",
-        "zendframework/zend-soap": "~2.4.6",
-        "zendframework/zend-uri": "~2.4.6",
-        "zendframework/zend-validator": "~2.4.6",
-        "zendframework/zend-crypt": "~2.4.6",
-        "zendframework/zend-console": "~2.4.6",
-        "zendframework/zend-modulemanager": "~2.4.6",
-        "zendframework/zend-mvc": "~2.4.6",
-        "zendframework/zend-text": "~2.4.6",
-        "zendframework/zend-i18n": "~2.4.6",
-        "zendframework/zend-eventmanager": "~2.4.6",
-        "zendframework/zend-view": "~2.4.6",
-        "zendframework/zend-servicemanager": "~2.4.6",
-        "zendframework/zend-json": "~2.4.6",
-        "zendframework/zend-config": "~2.4.6",
-        "zendframework/zend-form": "~2.4.6",
-        "zendframework/zend-di": "~2.4.6",
-        "zendframework/zend-serializer": "~2.4.6",
-        "zendframework/zend-log": "~2.4.6",
-        "zendframework/zend-http": "~2.4.6",
-        "zendframework/zend-db": "~2.4.6",
-        "zendframework/zend-captcha": "~2.4.6",
-        "zendframework/zend-session": "~2.4.6",
+        "zendframework/zend-stdlib": "^2.7.7",
+        "zendframework/zend-code": "^3.1.0",
+        "zendframework/zend-server": "^2.6.1",
+        "zendframework/zend-soap": "^2.6.0",
+        "zendframework/zend-uri": "^2.5.1",
+        "zendframework/zend-validator": "^2.6.0",
+        "zendframework/zend-crypt": "^2.6.0",
+        "zendframework/zend-console": "^2.6.0",
+        "zendframework/zend-modulemanager": "^2.7",
+        "zendframework/zend-mvc": "~2.6.3",
+        "zendframework/zend-text": "^2.6.0",
+        "zendframework/zend-i18n": "^2.7.3",
+        "zendframework/zend-eventmanager": "^2.6.3",
+        "zendframework/zend-view": "^2.8.1",
+        "zendframework/zend-servicemanager": "^2.7.8",
+        "zendframework/zend-json": "^2.6.1",
+        "zendframework/zend-config": "^2.6.0",
+        "zendframework/zend-form": "^2.10.0",
+        "zendframework/zend-di": "^2.6.1",
+        "zendframework/zend-serializer": "^2.7.2",
+        "zendframework/zend-log": "^2.9.1",
+        "zendframework/zend-http": "^2.6.0",
+        "zendframework/zend-db": "^2.8.2",
+        "zendframework/zend-captcha": "^2.7.1",
+        "zendframework/zend-session": "^2.7.3",
         "magento/zendframework1": "~1.12.16",
         "colinmollenhour/credis": "1.6",
         "colinmollenhour/php-redis-session-abstract": "1.2",