l4: Fix L7DataMap.MarshalJSON() whitespacing.
l4: Fix L7DataMap.MarshalJSON() whitespacing.

L7DataMap.MarshalJSON() has been attempting to implement
MarshalIndent() rather than MarshalJSON(), but this is unnecessary -
json.MarshalIndent() will do this for us. Remove the whitespace
formatting from this function.

Signed-off-by: Joe Stringer <16a9a54ddf4259952e3c118c763138e83693d7fd@covalent.io>

scanf/cilium,michi-covalent/cilium,tgraf/cilium,cilium/cilium,cilium/cilium,scanf/cilium,cilium/cilium,scanf/cilium,michi-covalent/cilium,tklauser/cilium,eloycoto/cilium,tgraf/cilium,michi-covalent/cilium,tgraf/cilium,scanf/cilium,eloycoto/cilium,cilium/cilium,scanf/cilium,tgraf/cilium,tklauser/cilium,tklauser/cilium,eloycoto/cilium,eloycoto/cilium,scanf/cilium,tklauser/cilium,cilium/cilium,tgraf/cilium,michi-covalent/cilium,cilium-team/cilium,eloycoto/cilium,eloycoto/cilium,tklauser/cilium,michi-covalent/cilium,scanf/cilium,tgraf/cilium,eloycoto/cilium,cilium-team/cilium