PBM_tests. Add delay for PITR, Return OL8 as base image (#923)

* PBM_tests. Add delay for PITR to catch-up
* PBM_tests. Return OL8 as base image, fix style error

Author: sandraromanchenko

e2e-tests/docker/pbm.dockerfile

@@ -3,7 +3,7 @@ ARG MONGODB_IMAGE=percona/percona-server-mongodb
 
 FROM ${MONGODB_IMAGE}:${MONGODB_VERSION} as mongo_image
 
-FROM oraclelinux:9 as base-build
+FROM oraclelinux:8 as base-build
 WORKDIR /build
 
 RUN mkdir -p /data/db

e2e-tests/docker/tests.dockerfile

@@ -1,4 +1,4 @@
-FROM oraclelinux:9 AS base-build
+FROM oraclelinux:8 AS base-build
 WORKDIR /build
 RUN dnf update && dnf install make gcc krb5-devel
 

e2e-tests/pkg/pbm/clock_skew.go

@@ -55,7 +55,7 @@ func ClockSkew(rsName, ts, dockerHost string) error {
 			Env:    envs,
 			Cmd:    []string{"pbm-agent"},
 			Labels: containerOld.Config.Labels,
-			User: "1001",
+			User:   "1001",
 		},
 			containerOld.HostConfig,
 			&network.NetworkingConfig{

e2e-tests/pkg/tests/sharded/trx.go

@@ -361,6 +361,7 @@ func (c *Cluster) checkTrxCollection(ctx context.Context, col string, bcp Backup
 	}
 	c.flushRouterConfig(ctx)
 
+	time.Sleep(time.Second * 60)
 	bcp.Restore()
 
 	log.Println("check committed transaction")