Revised GzipCompressionContentType to work correctly as a list

Merge branch 'master' into issue-287-domain-library-absolute-paths

# Conflicts:
#	core/src/main/python/create.py

Author: rakillen

core/src/main/resources/oracle/weblogic/deploy/aliases/category_modules/WebAppContainer.json

@@ -13,7 +13,7 @@
             "folders": {},
             "attributes": {
                 "DynamicallyCreated":                  [ {"version": "[12.2.1.3,)",       "wlst_mode": "both",    "wlst_name": "DynamicallyCreated",                 "wlst_path": "WP002", "value": {"default": false    }, "wlst_type": "boolean"           } ],
-                "GzipCompressionContentType":          [ {"version": "[12.2.1.3,)",       "wlst_mode": "both",    "wlst_name": "GzipCompressionContentType",         "wlst_path": "WP002", "value": {"default": "None"   }, "wlst_type": "string"           } ],
+                "GzipCompressionContentType":          [ {"version": "[12.2.1.3,)",       "wlst_mode": "both",    "wlst_name": "GzipCompressionContentType",         "wlst_path": "WP002", "value": {"default": "None"   }, "wlst_type": "${list:jarray}",  "wlst_read_type": "delimited_string[semicolon]", "get_method": "${LSA:GET}", "preferred_model_type": "list" } ],
                 "GzipCompressionEnabled":              [ {"version": "[12.2.1.3,)",       "wlst_mode": "both",    "wlst_name": "GzipCompressionEnabled",             "wlst_path": "WP002", "value": {"default": false    }, "wlst_type": "boolean"           } ],
                 "GzipCompressionMinContentLength":     [ {"version": "[12.2.1.3,)",       "wlst_mode": "both",    "wlst_name": "GzipCompressionMinContentLength",    "wlst_path": "WP002", "value": {"default": 2048     }, "wlst_type": "integer"           } ],
                 "Notes":                               [ {"version": "[12.2.1.3,)",       "wlst_mode": "both",    "wlst_name": "Notes",                              "wlst_path": "WP002", "value": {"default": "None"   }, "wlst_type": "string"            } ]