add htmlunit dependence

Since htmlunit isn't in the selenium project we have to add it manually in the build.gradle.
(SeleniumHQ/selenium@05325a7#diff-1998ab834c50706eec2893da4561cc50)

Author: nicolasiltis

Diff for: build.gradle

@@ -117,6 +117,7 @@ dependencies {
     testCompile 'org.hamcrest:hamcrest-all:1.3'
     testCompile ('org.seleniumhq.selenium:selenium-java:3.12.0') { exclude group: 'junit' }
     testCompile 'org.seleniumhq.selenium:selenium-api:3.12.0'
+    testCompile 'org.seleniumhq.selenium:htmlunit-driver:2.29.0'
     testCompile 'log4j:log4j:1.2.17'
     testCompile 'args4j:args4j:2.0.16'
     testCompile 'commons-configuration:commons-configuration:1.8'

Diff for: src/test/java/net/continuumsecurity/scanner/ZapManager.java

@@ -48,7 +48,7 @@ public int startZAP(String zapPath) throws Exception {
             params.add("-config"); params.add("api.key="+API_KEY);
             Config.getInstance().setProxyApi(API_KEY);
             String upstreamProxyHost = Config.getInstance().getUpstreamProxyHost();
-            if (upstreamProxyHost.isEmpty()) {
+            if (!upstreamProxyHost.isEmpty()) {
                 int upstreamProxyPort = Config.getInstance().getUpstreamProxyPort();
                 log.info("Setting upstream proxy for ZAP to: "+upstreamProxyHost+":"+upstreamProxyPort);
                 params.add("-config"); params.add("connection.proxyChain.hostName="+upstreamProxyHost);

Diff for: src/test/java/net/continuumsecurity/web/drivers/DriverFactory.java

@@ -29,6 +29,7 @@
 import org.openqa.selenium.firefox.internal.ProfilesIni;
 import org.openqa.selenium.remote.CapabilityType;
 import org.openqa.selenium.remote.DesiredCapabilities;
+import org.openqa.selenium.htmlunit.HtmlUnitDriver;
 
 import java.io.File;
 
@@ -170,7 +171,8 @@ public DesiredCapabilities createProxyCapabilities(String type) {
 	    capabilities = DesiredCapabilities.firefox();
 	    break;
 	case HTMLUNIT:
-	    capabilities = DesiredCapabilities.htmlunit();
+	    capabilities = DesiredCapabilities.htmlUnit();
+	    break;
 	default:
 	    break;
 	}