add mysql container to the build environment jenkins slave pod

Former-commit-id: ef15e9daf81bbf813ab1170ca52d2473f23c3039

ci/jenkinsfile/milvus_build.groovy

@@ -17,7 +17,7 @@ container('milvus-build-env') {
                             && export FAISS_URL='http://192.168.1.105:6060/jinhai/faiss/-/archive/branch-0.2.1/faiss-branch-0.2.1.tar.gz' \
                             && ./build.sh -t ${params.BUILD_TYPE} -d /opt/milvus -j -u -c"
 
-                            sh "./coverage.sh -u root -p 123456 -t 192.168.1.194"
+                            sh "./coverage.sh -u root -p 123456 -t \$POD_IP"
                         }
                     }
                 } catch (exc) {

ci/main_jenkinsfile

@@ -45,6 +45,11 @@ spec:
   containers:
   - name: milvus-build-env
     image: registry.zilliz.com/milvus/milvus-build-env:v0.13
+    env:
+    - name: POD_IP
+      valueFrom:
+        fieldRef:
+          fieldPath: status.podIP
     command:
     - cat
     tty: true
@@ -56,6 +61,14 @@ spec:
       requests:
         memory: "14Gi"
         cpu: "5.0"
+  - name: milvus-mysql
+    image: mysql:5.6
+    env:
+    - name: MYSQL_ROOT_PASSWORD
+      value: 123456
+    ports:
+    - containerPort: 3306
+      name: mysql
 """
                         }
                     }

ci/main_jenkinsfile_no_ut

@@ -45,6 +45,11 @@ spec:
   containers:
   - name: milvus-build-env
     image: registry.zilliz.com/milvus/milvus-build-env:v0.13
+    env:
+    - name: POD_IP
+      valueFrom:
+        fieldRef:
+          fieldPath: status.podIP
     command:
     - cat
     tty: true
@@ -56,6 +61,14 @@ spec:
       requests:
         memory: "14Gi"
         cpu: "5.0"
+  - name: milvus-mysql
+    image: mysql:5.6
+    env:
+    - name: MYSQL_ROOT_PASSWORD
+      value: 123456
+    ports:
+    - containerPort: 3306
+      name: mysql
 """
                         }
                     }