Fix dependency installation script

The script generates files owned by root so it needs to be removed with
sudo. As the removal of the directory is the last command, its failure
causes the script to fail.

BUILD/install_build_deps.sh

@@ -139,7 +139,7 @@ git clone https://github.com/alanxz/rabbitmq-c.git
 if [ $? != 0 ]
 then
     echo "Error cloning rabbitmq-c"
-    rm -rf $tmpdir
+    sudo rm -rf $tmpdir
     exit 1
 fi
 
@@ -157,7 +157,7 @@ wget -q --no-check-certificate http://prdownloads.sourceforge.net/tcl/tcl8.6.5-s
 if [ $? != 0 ]
 then
     echo "Error getting tcl"
-    rm -rf $tmpdir
+    sudo rm -rf $tmpdir
     exit 1
 fi
 
@@ -173,7 +173,7 @@ git clone https://github.com/akheron/jansson.git
 if [ $? != 0 ]
 then
     echo "Error cloning jansson"
-    rm -rf $tmpdir
+    sudo rm -rf $tmpdir
     exit 1
 fi
 
@@ -191,7 +191,7 @@ wget -q -r -l1 -nH --cut-dirs=2 --no-parent -A.tar.gz --no-directories http://mi
 if [ $? != 0 ]
 then
     echo "Error getting avro-c"
-    rm -rf $tmpdir
+    sudo rm -rf $tmpdir
     exit 1
 fi
 avro_filename=`ls -1 avro*.tar.gz`
@@ -209,4 +209,4 @@ wget --quiet https://nodejs.org/dist/v6.11.2/node-v6.11.2-linux-x64.tar.xz
 tar -axf node-v6.11.2-linux-x64.tar.xz
 sudo cp -t /usr -r node-v6.11.2-linux-x64/*
 
-rm -rf $tmpdir
+sudo rm -rf $tmpdir