NE-1865 Fix the Network Ingress & DNS OWNERS

files and add aliases to OWNERS_ALIASES.

modified:   OWNERS_ALIASES
new file:   test/extended/dns/OWNERS
modified:   test/extended/router/OWNERS

OWNERS_ALIASES

@@ -54,3 +54,25 @@ aliases:
   - umohnani8 # Container Engine Tools
   - davidvossel # HyperShift on KubeVirt Platform
   - orenc1 # HyperShift on KubeVirt Platform
+  network-ingress-dns-test-case-approvers:
+  - frobware
+  - knobunc
+  - Miciah
+  - miheer
+  - alebedev87
+  - candita
+  - gcs278
+  - rfredette
+  - Thealisyed
+  - grzpiotrowski
+  network-ingress-dns-test-case-reviewers:
+  - frobware
+  - knobunc
+  - Miciah
+  - miheer
+  - alebedev87
+  - candita
+  - gcs278
+  - rfredette
+  - Thealisyed
+  - grzpiotrowski

test/extended/dns/OWNERS

@@ -0,0 +1,6 @@
+# We use aliases defined in OWNERS_ALIASES
+
+approvers:
+- network-ingress-dns-test-case-approvers
+reviewers:
+- network-ingress-dns-test-case-reviewers

test/extended/router/OWNERS

@@ -1,25 +1,9 @@
+# We use aliases defined in OWNERS_ALIASES
+
 approvers:
-  - frobware
-  - knobunc
-  - Miciah
-  - miheer
-  - alebedev87
-  - candita
-  - gcs278
-  - rfredette
-  - Thealisyed
-  - grzpiotrowski
+- network-ingress-dns-test-case-approvers
 reviewers:
-  - frobware
-  - knobunc
-  - Miciah
-  - miheer
-  - alebedev87
-  - candita
-  - gcs278
-  - rfredette
-  - Thealisyed
-  - grzpiotrowski
+- network-ingress-dns-test-case-reviewers
 emeritus_approvers:
   - danehans
   - sgreene570