Update deprecated fields in clab along other parameters

Description

Related Issue

Motivation and Context

How Has This Been Tested?

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Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

applications/venv-manager/containerlab/containerlab.go

@@ -3,8 +3,8 @@ package containerlab
 // Management represents the management part for containerlab.
 type Management struct {
 	Network    string `yaml:"network,omitempty"`
-	Ipv4Subnet string `yaml:"ipv4_subnet,omitempty"`
-	Ipv6Subnet string `yaml:"ipv6_subnet,omitempty"`
+	Ipv4Subnet string `yaml:"ipv4-subnet,omitempty"`
+	Ipv6Subnet string `yaml:"ipv6-subnet,omitempty"`
 }
 
 // Link represents a link for containerlab.
@@ -16,7 +16,7 @@ type Link struct {
 type Node struct {
 	Kind     string `yaml:"kind"`
 	Image    string `yaml:"image"`
-	MgmtIpv4 string `yaml:"mgmt_ipv4"`
+	MgmtIpv4 string `yaml:"mgmt-ipv4"`
 }
 
 // Topology represent a topology for containerlab.