Partially reverting Change-Id: Ic3a2f13c14816e803debc208826445ef27b49a4f

Calls to .build() and addLocalPackages() were breaking WARs.

Also, forcing onos-buck to check SHA of downloaded bits rather than just Buck's version

Change-Id: I2e93ffaec7eb08ace3742b8f5456516836e149e2
diff --git a/tools/build/buck-plugin/buck-plugin-install b/tools/build/buck-plugin/buck-plugin-install
index 9dc44d7..15cf0e6 100755
--- a/tools/build/buck-plugin/buck-plugin-install
+++ b/tools/build/buck-plugin/buck-plugin-install
@@ -5,7 +5,7 @@
 set -e
 
 # Build it first
-pluginJar=$(NO_BUCKD=1 buck build //tools/build/buck-plugin:onos --no-cache --show-output | grep onos.jar | cut -d\  -f2)
+pluginJar=$(NO_BUCKD=1 onos-buck build //tools/build/buck-plugin:onos --no-cache --show-output | grep onos.jar | cut -d\  -f2)
 
 # Then install it
 mkdir -p $PLUGINS