Support provider fully-qualified class name in Restricted Security mode

[taoliult]

This is a back port PR from JDKNext PR ibmruntimes/openj9-openjdk-jdk#758

This PR is for updating the codes to only support the fully-qualified class name when setting the providers list in restricted security profiles. For example, the NSS FIPS140-2 provider list will be:

RestrictedSecurity.NSS.140-2.jce.provider.1 = sun.security.pkcs11.SunPKCS11 ${java.home}/conf/security/nss.fips.cfg
RestrictedSecurity.NSS.140-2.jce.provider.2 = sun.security.provider.Sun [ \
    {CertificateFactory, X.509, ImplementedIn=Software}, \
    {CertStore, Collection, ImplementedIn=Software}, \
    {CertStore, com.sun.security.IndexedCollection, ImplementedIn=Software}, \
    {Policy, JavaPolicy, *}, {Configuration, JavaLoginConfig, *}, \
    {CertPathBuilder, PKIX, ValidationAlgorithm=RFC5280:ImplementedIn=Software}, \
    {CertPathValidator, PKIX, ValidationAlgorithm=RFC5280:ImplementedIn=Software}, \
    {KeyStore, PKCS12, *}]
RestrictedSecurity.NSS.140-2.jce.provider.3 = sun.security.ec.SunEC [{KeyFactory, EC, ImplementedIn=Software: \
    SupportedKeyClasses=java.security.interfaces.ECPublicKey|java.security.interfaces.ECPrivateKey: \
    KeySize=256}, {AlgorithmParameters, EC, *}]
RestrictedSecurity.NSS.140-2.jce.provider.4 = sun.security.ssl.SunJSSE

[keithc-ca]

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