Make git update use new credential helper that fetches git creds from vault.

lib/gitpassword.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+if [ "$1" != "get" ]; then
+	echo "Usage: $0 get"
+	exit 1
+fi
+
+baseDir() {
+	# see https://stackoverflow.com/questions/59895
+	SOURCE=${BASH_SOURCE[0]}
+	while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
+		DIR=$( cd -P "$( dirname "$SOURCE" )" >/dev/null 2>&1 && pwd )
+		SOURCE=$(readlink "$SOURCE")
+		[[ $SOURCE != /* ]] && SOURCE=$DIR/$SOURCE # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
+        done
+        DIR=$( cd -P "$( dirname "$SOURCE" )/.." >/dev/null 2>&1 && pwd )
+        echo $DIR
+}
+
+BASE=$(baseDir)
+cd $BASE
+
+source lib/functions.sh
+
+assertVarsNotEmpty SITE_ID || exit 1
+
+date >> /tmp/gitpass
+
+PARAMS="$(tee -a /tmp/gitpass)"
+GITHOST=$(echo "$PARAMS" | grep "^host=" | sed 's/host=\(.*\)/\1/g')
+
+fetchVarsFromVault CCP_GIT
+
+if [ -z "${CCP_GIT}" ]; then
+	log ERROR "Git password not found."
+	exit 1
+fi
+
+tee -a /tmp/gitpass <<EOF
+protocol=https
+host=$GITHOST
+username=bk-${SITE_ID}
+password=${CCP_GIT}
+EOF
+
+echo >> /tmp/gitpass