Add retries to remote test package installs.

test/runner/setup/remote.sh

@@ -9,6 +9,7 @@ env
 cd ~/
 
 if [ "${platform}" = "freebsd" ]; then
+    while true; do
         pkg install -y \
             bash \
             curl \
@@ -22,9 +23,14 @@ if [ "${platform}" = "freebsd" ]; then
             subversion \
             sudo \
             zip \
+         && break
+         echo "Failed to install packages. Sleeping before trying again..."
+         sleep 10
+    done
 
     pip --version 2>/dev/null || curl --silent --show-error https://bootstrap.pypa.io/get-pip.py | python
 elif [ "${platform}" = "rhel" ]; then
+    while true; do
         yum install -y \
             gcc \
             git \
@@ -36,6 +42,10 @@ elif [ "${platform}" = "rhel" ]; then
             rubygems \
             subversion \
             unzip \
+         && break
+         echo "Failed to install packages. Sleeping before trying again..."
+         sleep 10
+    done
 
     pip --version 2>/dev/null || curl --silent --show-error https://bootstrap.pypa.io/get-pip.py | python
 fi