Add script to create CI VMs for debugging

Frequently debugging of CI-related problems requires going hands-on
within the environment.  However, reproducing the environment by hand is
very tedious and error prone.  This script permits authorized users to
produce VM's based on any available cache-image, and automatically remove
them upon logout.

Also: Bump up VM disk sizes to 200GB due to performance reasons

Signed-off-by: Chris Evich <cevich@redhat.com>

contrib/cirrus/lib.sh

@@ -6,6 +6,19 @@
 # Under some contexts these values are not set, make sure they are.
 export USER="$(whoami)"
 export HOME="$(getent passwd $USER | cut -d : -f 6)"
+
+# These are normally set by cirrus, if not use some reasonable defaults
+ENVLIB=${ENVLIB:-.bash_profile}
+CIRRUS_WORKING_DIR=${CIRRUS_WORKING_DIR:-/var/tmp/go/src/github.com/containers/libpod}
+SCRIPT_BASE=${SCRIPT_BASE:-./contrib/cirrus}
+PACKER_BASE=${PACKER_BASE:-./contrib/cirrus/packer}
+CIRRUS_BUILD_ID=${CIRRUS_BUILD_ID:-DEADBEEF}  # a human
+cd "$CIRRUS_WORKING_DIR"
+CIRRUS_BASE_SHA=${CIRRUS_BASE_SHA:-$(git rev-parse upstream/master || git rev-parse origin/master)}
+CIRRUS_CHANGE_IN_REPO=${CIRRUS_CHANGE_IN_REPO:-$(git rev-parse HEAD)}
+CIRRUS_REPO_NAME=${CIRRUS_REPO_NAME:-libpod}
+cd -
+
 if ! [[ "$PATH" =~ "/usr/local/bin" ]]
 then
     export PATH="$PATH:/usr/local/bin"

contrib/cirrus/setup_environment.sh

@@ -4,7 +4,6 @@ set -e
 source $(dirname $0)/lib.sh
 
 req_env_var "
-CI $CI
 USER $USER
 HOME $HOME
 ENVLIB $ENVLIB