chore(fixes): Unwrap yaml before converting and fix volume name variable

2 fixes:

- the first problem to resolve is that some volume names can have "-" in
the name. We now replace them by "_"
- the second problem is that k8s.io library truncates the lines and so
we cannot split the files by lines. We now "unwrap" the result.

TODO: globalize the `yaml.Marshal()` code to our own specific function

generator/utils.go

@@ -1,16 +1,18 @@
 package generator
 
 import (
+	"katenary/generator/labelStructs"
+	"katenary/utils"
+	"regexp"
 	"strconv"
 	"strings"
 
 	"github.com/compose-spec/compose-go/types"
 	corev1 "k8s.io/api/core/v1"
-
-	"katenary/generator/labelStructs"
-	"katenary/utils"
 )
 
+var regexpLineWrap = regexp.MustCompile(`\n\s+}}`)
+
 // findDeployment finds the corresponding target deployment for a service.
 func findDeployment(serviceName string, deployments map[string]*Deployment) *Deployment {
 	for _, d := range deployments {
@@ -77,3 +79,8 @@ func isIgnored(service types.ServiceConfig) bool {
 	}
 	return false
 }
+
+// UnWrapTPL removes the line wrapping from a template.
+func UnWrapTPL(in []byte) []byte {
+	return regexpLineWrap.ReplaceAll(in, []byte(" }}"))
+}