update to Brussels-SR17 #896

[btiwahorisu]

Please review #896 .

[coveralls]

Coverage remained the same at 98.924% when pulling e1303bd on issue/896-update-spring-io-platform into 1e7dfdc on 5.4.x.

[coveralls]

Coverage decreased (-0.06%) to 98.861% when pulling e1303bd on issue/896-update-spring-io-platform into 1e7dfdc on 5.4.x.

[btyanagawamg]

@hirakuriy @btiwahorisu
I think it better to remove below .

terasoluna-gfw/terasoluna-gfw-parent/pom.xml

Lines 196 to 203 in ce9fb50

	<!-- == Begin Spring Security OAuth == -->
	<!-- == Upgrade Spring Security OAuth from the Spring IO Platform as a security vulnerability update.(CVE-2019-3778) == -->
	<dependency>
	<groupId>org.springframework.security.oauth</groupId>
	<artifactId>spring-security-oauth2</artifactId>
	<version>${spring-security-oauth.version}</version>
	</dependency>
	<!-- == End Spring Security OAuth == -->