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: Koushik Das <koushik@apache.org>
Fixed ResouceLeak on pstmtCidr in the function Upgrade430to440.moveCidrsToTheirOwnTable as reported by coverity

Fixed another leak which might occur due to outer while loop.

Signed-off-by: Daan Hoogland <daan@onecht.net>
(cherry picked from commit 004e0cbf61e9bf29bd716c8a0d7ac2f10c57433b)
(cherry picked from commit fa3bbe9a1946b3597fe5d1a8a448607d54106b7e)
update vlan uris

Conflicts:
	engine/schema/src/com/cloud/upgrade/dao/Upgrade430to440.java

(cherry picked from commit 44012ddadfd73e76b3750e7ce1e6b4aa24d74796)