Update SSL certificate with san=dns:localhost

Also, certificate is now valid for 100 years.
keytool -genkey -keyalg RSA -alias selfsigned -keystore s3mock.jks -storepass password  -keysize 2048 -ext san=dns:localhost -validity 365000
What is your first and last name?
  [Unknown]:  Adobe S3Mock
What is the name of your organizational unit?
  [Unknown]:  S3Mock
What is the name of your organization?
  [Unknown]:  S3Mock
What is the name of your City or Locality?
  [Unknown]:  Hamburg
What is the name of your State or Province?
  [Unknown]:  Hamburg
What is the two-letter country code for this unit?
  [Unknown]:  DE
Is CN=Adobe S3Mock, OU=S3Mock, O=S3Mock, L=Hamburg, ST=Hamburg, C=DE correct?
  [no]:  yes

Generating 2.048 bit RSA key pair and self-signed certificate (SHA256withRSA) with a validity of 365.000 days
	for: CN=Adobe S3Mock, OU=S3Mock, O=S3Mock, L=Hamburg, ST=Hamburg, C=DE

Fixes #228