Handling metadata with multiple equals
Handling metadata with multiple equals

For instance TAGS can contains an equal in the value

    TAGS_0=user_key=user_value

Without this patch, `oc-metadata TAGS_0` returned `user_key`
Now it will return `user_key=user_value`
QuentinPerez/image-tools,scaleway/image-tools,aimxhaisse/image-tools,moul/image-tools