CLOUDSTACK-7822: Fixed SSL Cert Tests and relaxed chain validation

(cherry picked from commit 92d4a41a69da34b0b6f435f95fd959e2110b662c)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

Conflicts:
	server/test/org/apache/cloudstack/network/lb/CertServiceTest.java
	server/test/resources/certs/root_chain.crt
	server/test/resources/certs/root_chain.key
	server/test/resources/certs/rsa_ca_signed2.crt

(cherry picked from commit 9c0c4f713f95e5fa228a8b22c51a0f59e5f8a9d1)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

Conflicts:
	server/src/org/apache/cloudstack/network/lb/CertServiceImpl.java
	server/test/org/apache/cloudstack/network/lb/CertServiceTest.java
	server/test/resources/certs/rsa_ca_signed.crt
	server/test/resources/certs/rsa_ca_signed.key
	server/test/resources/certs/rsa_self_signed.crt
	server/test/resources/certs/rsa_self_signed.key
	server/test/resources/certs/rsa_self_signed_with_pwd.crt
	server/test/resources/certs/rsa_self_signed_with_pwd.key
CLOUDSTACK-7952: Remove private key from SslCertResponse (listSslCerts)

Signed-off-by: Will Stevens <wstevens@cloudops.com>
(cherry picked from commit 8ea79020751dffe9f84ab1b17a943bd385f9a50c)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
CLOUDSTACK-3383: Fetch CPU utilization more reliable.

This should fix that we can't gather CPU statistics on hypervisors
> Ubuntu 12.04

(cherry picked from commit 69ee01af9df8d72ccd8901d146726e74edda95d7)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

Conflicts:
	plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
appliance: change CLOUDSTACK version to match 4.3.1 for building systemvmtemplate

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>