Add newer Percona packaging key

See also docker-library/percona@31785bf

Dockerfile.template

@@ -29,10 +29,17 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 
 # Key fingerprint = 1993 69E5 404B D5FC 7D2F  E43B CBCB 082A 1BB9 43DB
 # MariaDB Package Signing Key <[email protected]>
-# Key fingerprint = 430B DF5C 56E7 C94E 848E  E60C 1C4C BDCD CD2E FD2A
-# Percona MySQL Development Team <[email protected]>
 RUN apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys 199369E5404BD5FC7D2FE43BCBCB082A1BB943DB \
-	&& apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys 430BDF5C56E7C94E848EE60C1C4CBDCDCD2EFD2A
+# pub   1024D/CD2EFD2A 2009-12-15
+#       Key fingerprint = 430B DF5C 56E7 C94E 848E  E60C 1C4C BDCD CD2E FD2A
+# uid                  Percona MySQL Development Team <[email protected]>
+# sub   2048g/2D607DAF 2009-12-15
+	&& apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys 430BDF5C56E7C94E848EE60C1C4CBDCDCD2EFD2A \
+# pub   4096R/8507EFA5 2016-06-30
+#       Key fingerprint = 4D1B B29D 63D9 8E42 2B21  13B1 9334 A25F 8507 EFA5
+# uid                  Percona MySQL Development Team (Packaging key) <[email protected]>
+# sub   4096R/4CAC6D72 2016-06-30
+	&& apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys 4D1BB29D63D98E422B2113B19334A25F8507EFA5
 
 RUN echo "deb https://repo.percona.com/apt %%SUITE%% main" > /etc/apt/sources.list.d/percona.list \
 	&& { \