Fix maven issues while downloading java dependencies (#171)

* Zip java-okhttp dependencies and unzip in ci-requirements

* zip java-unirest dependencies and update ci-requirements.

* Change httpbin to mockbin for redirect test.

Author: umeshp7

codegens/java-okhttp/test/unit/fixtures/dependencies.zip

@@ -14,21 +14,12 @@ pushd ./codegens/java-okhttp &>/dev/null;
   sudo rm -rf /var/lib/apt/lists/*
   sudo apt-get update
   sudo apt-get install -y openjdk-8-jdk
-  sudo wget http://central.maven.org/maven2/com/squareup/okhttp3/okhttp/3.9.1/okhttp-3.9.1.jar
-  sudo wget http://central.maven.org/maven2/com/squareup/okio/okio/1.14.0/okio-1.14.0.jar
+  unzip test/unit/fixtures/dependencies.zip
 popd &>/dev/null;
 
 echo "Installing dependencies required for tests in codegens/java-unirest"
 pushd ./codegens/java-unirest &>/dev/null;
-  sudo wget http://central.maven.org/maven2/com/mashape/unirest/unirest-java/1.4.9/unirest-java-1.4.9.jar
-  sudo wget http://central.maven.org/maven2/org/apache/httpcomponents/httpclient/4.5.2/httpclient-4.5.2.jar
-  sudo wget http://central.maven.org/maven2/commons-codec/commons-codec/1.9/commons-codec-1.9.jar
-  sudo wget http://central.maven.org/maven2/commons-logging/commons-logging/1.2/commons-logging-1.2.jar
-  sudo wget http://central.maven.org/maven2/org/apache/httpcomponents/httpcore/4.4.4/httpcore-4.4.4.jar
-  sudo wget http://central.maven.org/maven2/org/apache/httpcomponents/httpasyncclient/4.1.1/httpasyncclient-4.1.1.jar
-  sudo wget http://central.maven.org/maven2/org/apache/httpcomponents/httpcore-nio/4.4.4/httpcore-nio-4.4.4.jar
-  sudo wget http://central.maven.org/maven2/org/json/json/20160212/json-20160212.jar
-  sudo wget http://central.maven.org/maven2/org/apache/httpcomponents/httpmime/4.3.6/httpmime-4.3.6.jar
+  unzip test/unit/fixtures/dependencies.zip
 popd &>/dev/null;
 
 echo "Installing dependencies required for tests in codegens/csharp-restsharp"

codegens/java-unirest/test/unit/fixtures/dependencies.zip

@@ -1,6 +1,6 @@
 {
 	"info": {
-		"_postman_id": "d5d65b0c-0f10-4455-8ba2-d887c4180a08",
+		"_postman_id": "3ef1c00f-c58f-4604-8419-7a4931958235",
 		"name": "Redirect test",
 		"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json"
 	},
@@ -11,18 +11,21 @@
 				"method": "GET",
 				"header": [],
 				"url": {
-					"raw": "https://httpbin.org/redirect-to?url=https://postman-echo.com/get",
+					"raw": "https://mockbin.org/redirect/302/1/?to=https://postman-echo.com/get",
 					"protocol": "https",
 					"host": [
-						"httpbin",
+						"mockbin",
 						"org"
 					],
 					"path": [
-						"redirect-to"
+						"redirect",
+						"302",
+						"1",
+						""
 					],
 					"query": [
 						{
-							"key": "url",
+							"key": "to",
 							"value": "https://postman-echo.com/get"
 						}
 					]