Merge pull request #1843 from cisagov/nl/1798-update-email-signature

Issue #1798: Updated automated e-mail signatures

src/registrar/templates/emails/domain_invitation.txt

@@ -37,4 +37,6 @@ THANK YOU
 The .gov team
 Contact us: <https://get.gov/contact/>
 Learn about .gov <https://get.gov>
+
+The .gov registry is a part of the Cybersecurity and Infrastructure Security Agency (CISA) <http://cisa.gov/>
 {% endautoescape %}

src/registrar/templates/emails/domain_request_withdrawn.txt

@@ -25,4 +25,6 @@ THANK YOU
 The .gov team
 Contact us: <https://get.gov/contact/>
 Learn about .gov <https://get.gov>
+
+The .gov registry is a part of the Cybersecurity and Infrastructure Security Agency (CISA) <http://cisa.gov/>
 {% endautoescape %}

src/registrar/templates/emails/status_change_approved.txt

@@ -48,4 +48,6 @@ THANK YOU
 The .gov team
 Contact us: <https://get.gov/contact/>
 Learn about .gov <https://get.gov>
+
+The .gov registry is a part of the Cybersecurity and Infrastructure Security Agency (CISA) <http://cisa.gov/>
 {% endautoescape %}

src/registrar/templates/emails/status_change_rejected.txt

@@ -78,4 +78,6 @@ THANK YOU
 The .gov team
 Contact us: <https://get.gov/contact/>
 Learn about .gov <https://get.gov>
+
+The .gov registry is a part of the Cybersecurity and Infrastructure Security Agency (CISA) <http://cisa.gov/>
 {% endautoescape %}

src/registrar/templates/emails/submission_confirmation.txt

@@ -35,4 +35,6 @@ THANK YOU
 The .gov team
 Contact us: <https://get.gov/contact/>
 Learn about .gov <https://get.gov>
+
+The .gov registry is a part of the Cybersecurity and Infrastructure Security Agency (CISA) <http://cisa.gov/>
 {% endautoescape %}

src/registrar/templates/emails/transition_domain_invitation.txt

@@ -59,4 +59,6 @@ The .gov team
 .Gov blog <https://get.gov/updates/> 
 Domain management <https://manage.get.gov>
 Get.gov <https://get.gov>
+
+The .gov registry is a part of the Cybersecurity and Infrastructure Security Agency (CISA) <http://cisa.gov/>
 {% endautoescape %}