Increase default for limit parameter to 500.

Default is increased for `packs` and `triggertypes` to fix
GUI problem with "panel" lists for "Packs" and "Triggers"
not displaying complete data due to current limit of 100,
when many packs and/or triggers are registered in ST2.

Update fixes `st2web` issue #1034.
StackStorm/st2web#1034

Author: TimothyDJones

st2common/st2common/openapi.yaml

@@ -1753,7 +1753,7 @@ paths:
           in: query
           description: Number of packs to get
           type: integer
-          default: 100
+          default: 500
         - name: offset
           in: query
           description: Number of packs to offset
@@ -3870,7 +3870,7 @@ paths:
           in: query
           description: Number of trigger types to get
           type: integer
-          default: 100
+          default: 500
         - name: offset
           in: query
           description: Number of trigger types to offset

st2common/st2common/openapi.yaml.j2

@@ -1749,7 +1749,7 @@ paths:
           in: query
           description: Number of packs to get
           type: integer
-          default: 100
+          default: 500
         - name: offset
           in: query
           description: Number of packs to offset
@@ -3866,7 +3866,7 @@ paths:
           in: query
           description: Number of trigger types to get
           type: integer
-          default: 100
+          default: 500
         - name: offset
           in: query
           description: Number of trigger types to offset