COVERITY: Fixed Resource leak (RESOURCE_LEAK) 11.

overwrite_var: Overwriting "pstmt" in "pstmt = conn.prepareStatement("INSERT INTO `cloud`.`ldap_configuration`(hostname, port) VALUES(?,?)")" leaks the resource that "pstmt" refers to.

Signed-off-by: Sebastien Goasguen <runseb@gmail.com>
COVERITY: Fixed issues reported by coverity NPEs, unwritten field access and self assignment

Signed-off-by: Sebastien Goasguen <runseb@gmail.com>
COVERITY: Fixed few coverity issues unused assignments, boxing and unboxing of values etc.

Signed-off-by: Sebastien Goasguen <runseb@gmail.com>
CLOUDSTACK-6665: A fix for vpc routers not releasing dhcp leases.

Signed-off-by: Sebastien Goasguen <runseb@gmail.com>
CLOUDSTACK-6665: A fix for vpc routers not releasing dhcp leases.

Author: John Nielsen <john@betterservers.com>

Signed-off-by: Sebastien Goasguen <runseb@gmail.com>
Merge branch '4.3' of https://git-wip-us.apache.org/repos/asf/cloudstack into 4.3