Added DHCP enable/disable feature

- DHCP toggle for enablement was not present, It is now added in
  the Networks page.
- DHCP when enabled, if there is no address, it picks up an address on its own.When it is disabled, we need to manually configure it.

Signed-off-by: Nikhil Ashoka <a.nikhil@ibm.com>
Change-Id: I32a9e0df28e6609945f3757a6bd69dc66a86f480
diff --git a/src/locales/en-US.json b/src/locales/en-US.json
index 7b057d3..ca7c4da 100644
--- a/src/locales/en-US.json
+++ b/src/locales/en-US.json
@@ -703,6 +703,9 @@
         "speed": "Speed (mbps)",
         "staticDns": "Static DNS",
         "modal": {
+            "confirmDisableDhcp": "Are you sure you want to disable DHCP?",
+            "confirmEnableDhcp": "When DHCP is enabled, static IP addresses will not be accessible.",
+            "dhcpConfirmTitle": "%{dhcpState} DHCP",
             "editHostnameTitle": "Edit hostname",
             "editMacAddressTitle": "Edit MAC address",
             "gateway": "Gateway",