readded explicitly deleting previous deployments

Changelog.md

 # Changelog
 
+## [1.4.6] - 2019-03-27
+### Added
+* explicitly deleting chart when `PENDING`, `FAILED` or `DELETED` since this blocks
+	redeploying previous deployments
+
 ## [1.4.5] - 2019-03-27
 ### Added
 * git-binary to docker-image
@@ -104,4 +109,5 @@
 [1.4.2]: https://git.sc.uni-leipzig.de/ubl/bdd_dev/webmasterei/deployer/compare/release%2F1.4.1...release%2F1.4.2
 [1.4.3]: https://git.sc.uni-leipzig.de/ubl/bdd_dev/webmasterei/deployer/compare/release%2F1.4.2...release%2F1.4.3
 [1.4.4]: https://git.sc.uni-leipzig.de/ubl/bdd_dev/webmasterei/deployer/compare/release%2F1.4.3...release%2F1.4.4
-[1.4.5]: https://git.sc.uni-leipzig.de/ubl/bdd_dev/webmasterei/deployer/compare/release%2F1.4.4...release%2F1.4.5
\ No newline at end of file
+[1.4.5]: https://git.sc.uni-leipzig.de/ubl/bdd_dev/webmasterei/deployer/compare/release%2F1.4.4...release%2F1.4.5
+[1.4.6]: https://git.sc.uni-leipzig.de/ubl/bdd_dev/webmasterei/deployer/compare/release%2F1.4.5...release%2F1.4.6
\ No newline at end of file

assets/deployer

@@ -328,6 +328,16 @@ helm_deploy() {
 	local out
 	local cmd
 
+	if [ "$(helm ls --tiller-namespace=${namespace} --namespace=${namespace} --pending --deleted --failed --short | grep ${name})" != "" ];then
+		debug "helm delete --tiller-namespace=${namespace} --purge ${name}"
+		out=`helm delete --tiller-namespace=${namespace} --purge ${name} 2>&1`
+		if [ "$?" != "0" ];then
+			echo "failed"
+			echo "$out"
+			return 1
+		fi
+	fi
+
 	helmargs=$(echo -e "$helmargs" | sed -E 's/(^[[:space:]]*)|([[:space:]]*$)//g')
 	cmd="helm upgrade --install --wait --timeout=${timeout} --tiller-namespace=${namespace} --namespace=${namespace}"
 	cmd="$cmd --namespace=${namespace} --force --recreate-pods ${name} ${charts} ${helmargs}"