[AETHER-1529] Nodes not READY due to gui/gui2 bundles being in WAITING

In particular gui2 bundle does not get activated due to the missing UiExtensionManager.cfgdef.
This patch manually copy the cfgdef generated for gui bundle into the final jar of gui2

Change-Id: I27fea43faa06f70bc8c0570c53a1dbf5cfd23e89
(cherry picked from commit 37691eb75be5ee295279bb3633bcefeb7166b444)
diff --git a/web/gui2/BUILD b/web/gui2/BUILD
index 7087334..5fcc3f9 100644
--- a/web/gui2/BUILD
+++ b/web/gui2/BUILD
@@ -91,6 +91,7 @@
         ":_onos-gui2-base-jar",
         "//web/gui:onos-gui-lion-for-gui2",
         "//web/gui2/src/main/webapp:WEB-INF/web.xml",
+        "//web/gui:onos-gui-jar_cfgdef.jar",
     ],
     outs = ["onos-gui2.jar"],
     cmd = " ROOT=`pwd` &&" +
@@ -101,6 +102,7 @@
           " mv web/gui/src/main/resources/org/onosproject/ui/lion* WEB-INF/classes/org/onosproject/ui/ &&" +
           " cp -R $$ROOT/$(location //web/gui2/src/main/webapp:prodapp)/* WEB-INF/classes/ &&" +
           " mv $$ROOT/$(location //web/gui2/src/main/webapp:WEB-INF/web.xml) WEB-INF &&" +
+          " (cd WEB-INF/classes && jar xf $$ROOT/$(location //web/gui:onos-gui-jar_cfgdef.jar)) &&" +
           " find . -type f -exec touch -t 202001010001 {} \\; &&" +
           " jar cmf META-INF/MANIFEST.MF $$ROOT/$@ WEB-INF/web.xml WEB-INF/classes OSGI-INF/*.xml",
     output_to_bindir = 1,