Add p param to QueryGroupsParams

Change-Id: I3d5f7a7802230f3a40b25edfe75b0d80e0a47b9a
(cherry picked from commit 0dbfaa43f6d22877de5e65c59fa24b910db4d9a1)
diff --git a/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-rest-api-interface.ts b/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-rest-api-interface.ts
index 63576c2..cf55b6f 100644
--- a/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-rest-api-interface.ts
+++ b/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-rest-api-interface.ts
@@ -241,6 +241,7 @@
   [paramName: string]: string | undefined | null | number;
   s: string;
   n?: number;
+  p?: string;
 }
 
 interface QuerySuggestedReviewersParams {