Add a bootstrap repo file stage

Allow for fetching additional dependencies for openstack
by allowing for fetching of arbitary repo files during
the bootstrap process.

Add an initial example that allows for fetching the RDO
repo file (which provides quite a few of the same python
dependencies that anvil will build automatically if it
can not find them itself).

Change-Id: Ia51adf017d398863432ecb9d218e163235039488

smithy

@@ -113,6 +113,32 @@ bootstrap_epel()
     return $?
 }
 
+bootstrap_repos()
+{
+    # Installs other repositories that will allow for installation of packages
+    # from places other than epel. This allows for anvil to find dependencies
+    # from other places (so anvil can avoid building those dependencies in the
+    # first place).
+    [ -z "$REPO_URLS" ] && return 0
+    # If urls were provided but no directory, that's bad.
+    [ -z "$REPO_DIR" ] && return 1
+    for repo_url in $REPO_URLS; do
+        echo "Installing repo file from $repo_url -> $REPO_DIR"
+        local base_filename=$(basename $repo_url)
+        local output_filename="$REPO_DIR/$base_filename"
+        if [ "$VERBOSE" == "0" ]; then
+            wget -q "$repo_url" -O "$output_filename"
+        else
+            wget "$repo_url" -O "$output_filename"
+        fi
+        if [ "$?" != "0" ]; then
+            echo -e "Failed downloading $repo_url -> $output_filename"
+            return 1
+        fi
+    done
+    return 0
+}
+
 unsudo()
 {
     # If a sudo user is active the given files/directories will be changed to

tools/bootstrap/CommonRedHat

@@ -1,7 +1,16 @@
 # -*- sh -*-
-STEPS="selinux epel rpm_packages virtualenv"
+STEPS="selinux epel repos rpm_packages virtualenv"
 EPEL_RPM_URL="http://mirrors.kernel.org/fedora-epel/6/i386/epel-release-6-8.noarch.rpm"
 DISTRO_CONFIG=conf/distros/rhel.yaml
+REPO_DIR=/etc/yum.repos.d/
+
+## Uncomment the following to allow for additional dependencies to be found
+## using the packages built by redhat in there RDO repository. Or add other repo
+## file providers that provide dependencies that anvil can use to skip building
+## those same dependencies itself).
+# REPO_URLS='
+#     http://repos.fedorapeople.org/repos/openstack/openstack-havana/epel-openstack-havana.repo
+# '
 
 ## Bootstrap for Red Hat based distros
 REQUIRES='