SocialAnalyzerPlugin downloads DTD from external source

• Type: Bug
• Status: Ready for Release
• Resolution: Fixed
• Affects Version/s: 7.3.X
• Fix Version/s: 7.0.X, 7.1.10 DXP FP26, 7.1.10.7 SP7, 7.1.X, 7.2.10 DXP FP16, 7.2.X, 7.3.10.3 DXP SP3, 7.3.X, 7.4.13 DXP GA1, 7.4.3.4 CE GA4, Master
• Component/s: Core Infrastructure
• Labels:
  • liferay-dxp-71-sp7
  • liferay-dxp-73-sp3
  • liferay-fix-pack-dxp-3-7310
  • liferay-fixpack-dxp-16-7210
  • liferay-fixpack-dxp-26-7110
  • liferay-fixpack-dxp-3-7310
• Branch Version/s:
  7.3.x, 7.2.x, 7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 5
• Git Pull Request: https://github.com/shuyangzhou/liferay-portal/pull/10360

When building a hotfix we are getting the following error:

     [exec] > Task :apps:blogs:blogs-web:jar FAILED
     [exec] error  : Exception: java.net.ConnectException: Connection timed out (Connection timed out)
     [exec] 	at java.net.PlainSocketImpl.socketConnect(Native Method)
     [exec] 	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
     [exec] 	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
     [exec] 	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
     [exec] 	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
     [exec] 	at java.net.Socket.connect(Socket.java:589)
     [exec] 	at java.net.Socket.connect(Socket.java:538)
     [exec] 	at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
     [exec] 	at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
     [exec] 	at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
     [exec] 	at sun.net.www.http.HttpClient.<init>(HttpClient.java:211)
     [exec] 	at sun.net.www.http.HttpClient.New(HttpClient.java:308)
     [exec] 	at sun.net.www.http.HttpClient.New(HttpClient.java:326)
     [exec] 	at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1202)
     [exec] 	at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1138)
     [exec] 	at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1032)
     [exec] 	at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:966)
     [exec] 	at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1546)
     [exec] 	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1474)
     [exec] 	at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:647)
     [exec] 	at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startEntity(XMLEntityManager.java:1304)
     [exec] 	at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startDTDEntity(XMLEntityManager.java:1270)
     [exec] 	at com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl.setInputSource(XMLDTDScannerImpl.java:264)
     [exec] 	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.dispatch(XMLDocumentScannerImpl.java:1161)
     [exec] 	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.next(XMLDocumentScannerImpl.java:1045)
     [exec] 	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:959)
     [exec] 	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
     [exec] 	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
     [exec] 	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:841)
     [exec] 	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:770)
     [exec] 	at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
     [exec] 	at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243)
     [exec] 	at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:339)
     [exec] 	at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:121)
     [exec] 	at com.liferay.ant.bnd.social.SocialAnalyzerPlugin.readXMLResource(SocialAnalyzerPlugin.java:132)
     [exec] 	at com.liferay.ant.bnd.social.SocialAnalyzerPlugin.analyzeJar(SocialAnalyzerPlugin.java:57)

We need to follow the same pattern as here to stabilize the build process:
https://github.com/liferay/liferay-portal/commit/8d10e0290dbb81aac29d5ab9741a23e50f0476af