migrate to dhtnet namespace

Change-Id: I7143a010bd83e8cfa7a3c8c3072ed23f6f0ba8e3
diff --git a/src/upnp/protocol/natpmp/nat_pmp.cpp b/src/upnp/protocol/natpmp/nat_pmp.cpp
index 68dfee0..8f04a19 100644
--- a/src/upnp/protocol/natpmp/nat_pmp.cpp
+++ b/src/upnp/protocol/natpmp/nat_pmp.cpp
@@ -23,7 +23,7 @@
 
 #if HAVE_LIBNATPMP
 
-namespace jami {
+namespace dhtnet {
 namespace upnp {
 
 NatPmp::NatPmp()
diff --git a/src/upnp/protocol/natpmp/nat_pmp.h b/src/upnp/protocol/natpmp/nat_pmp.h
index 68fd28b..1ecf90e 100644
--- a/src/upnp/protocol/natpmp/nat_pmp.h
+++ b/src/upnp/protocol/natpmp/nat_pmp.h
@@ -37,11 +37,11 @@
 #include <atomic>
 #include <thread>
 
-namespace jami {
+namespace dhtnet {
 class IpAddr;
 }
 
-namespace jami {
+namespace dhtnet {
 namespace upnp {
 
 // Requested lifetime in seconds. The actual lifetime might be different.
diff --git a/src/upnp/protocol/natpmp/pmp_igd.cpp b/src/upnp/protocol/natpmp/pmp_igd.cpp
index ac8b698..41f25dd 100644
--- a/src/upnp/protocol/natpmp/pmp_igd.cpp
+++ b/src/upnp/protocol/natpmp/pmp_igd.cpp
@@ -24,7 +24,7 @@
 
 #include <algorithm>
 
-namespace jami {
+namespace dhtnet {
 namespace upnp {
 
 PMPIGD::PMPIGD()
diff --git a/src/upnp/protocol/natpmp/pmp_igd.h b/src/upnp/protocol/natpmp/pmp_igd.h
index a70e7ee..b627462 100644
--- a/src/upnp/protocol/natpmp/pmp_igd.h
+++ b/src/upnp/protocol/natpmp/pmp_igd.h
@@ -31,7 +31,7 @@
 #include <chrono>
 #include <functional>
 
-namespace jami {
+namespace dhtnet {
 namespace upnp {
 
 class PMPIGD : public IGD