Add dependency on javax.annotation 1.2
Most CXF modules depend on annotation 1.3, but MP Rest Client 1.0 is
part of MP 1.3 which prereqs EE7 (annotation 1.2).  This is required so
that MP Rest Client 1.0 will operate in an EE7 environment.
<groupId>org.eclipse.microprofile.config</groupId>
<artifactId>microprofile-config-api</artifactId>
</dependency>
+ <dependency>
+ <groupId>javax.annotation</groupId>
+ <artifactId>javax.annotation-api</artifactId>
+ <version>1.2</version>
+ </dependency>
<dependency>
<groupId>javax.enterprise</groupId>
<artifactId>cdi-api</artifactId>
