Add missing keys for en-US translations

- Updated power supplies to use identifyLed key
- Updated system store identify LED toasts
- Corrected DHCP key capitilization
- Did not make changes to factory reset modal keys,
they are being used dynamically with `${}` in the key.
Same for Power restore policy `$t{powerState}`

Signed-off-by: Dixsie Wolmers <dixsie@ibm.com>
Change-Id: I19eeac4085326a2d18d90945028def88ec5ed991
diff --git a/src/store/modules/Health/SystemStore.js b/src/store/modules/Health/SystemStore.js
index b4ee384..55f3754 100644
--- a/src/store/modules/Health/SystemStore.js
+++ b/src/store/modules/Health/SystemStore.js
@@ -57,11 +57,11 @@
           console.log('error', error);
           if (ledState) {
             throw new Error(
-              i18n.t('pageHardwareStatus.toast.errorTurnOnIdentifyLed')
+              i18n.t('pageHardwareStatus.toast.errorEnableIdentifyLed')
             );
           } else {
             throw new Error(
-              i18n.t('pageHardwareStatus.toast.errorTurnOffIdentifyLed')
+              i18n.t('pageHardwareStatus.toast.errorDisableIdentifyLed')
             );
           }
         });