Downgrading ubuntu version for the buidl process

Author: PicoCreator

.github/workflows/gradle-build.yml

@@ -6,7 +6,7 @@ on:
     branches: [ master ]
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     steps:
     - uses: actions/checkout@v1
     - name: Init submodules

.github/workflows/hazelcast.yml

@@ -1,7 +1,7 @@
 name: Local Hazelcast Test
 on:
   push:
-    branches: [ master, "*" ]
+    branches: [ master, "hazelcast*", "*hazelcast*" ]
   pull_request:
     branches: [ master ]
 jobs:

.github/workflows/mongodb.yml

@@ -1,7 +1,7 @@
 name: MongoDB support test
 on:
   push:
-    branches: [ master, eugene/*, "mongodb*", "*mongodb*" ]
+    branches: [ master, "mongodb*", "*mongodb*" ]
   pull_request:
     branches: [ master ]
 jobs: