RSM

...G...... [ZBXNEXT-6331] unified plugins configuration functionality

# Conflicts:
#	src/go/plugins/ceph/uri.go
#	src/go/plugins/ceph/uri_test.go
#	src/go/plugins/memcached/uri.go
#	src/go/plugins/memcached/uri_test.go
#	src/go/plugins/mysql/error.go
#	src/go/plugins/mysql/uri.go
#	src/go/plugins/oracle/uri.go
#	src/go/plugins/oracle/uri_test.go
#	src/go/plugins/redis/error.go
#	src/go/plugins/redis/error_test.go
#	src/go/plugins/redis/uri.go
#	src/go/plugins/redis/uri_test.go