Removing hard coded version in .bnd files and fixing class not found issue

# Weld-OSGi fixes
## Fixing hard coded weld version in OSGi bundles
The first commit fixes the version of imported/exported package that were using the hard coded version 1.2.0-SNAPSHOT. The 1.2.0.beta1 released version is even buggy as the requirements are on 1.2.0-SNAPSHOT version in the MANIFEST.MF files.

    Constraint violation for package 'org.jboss.weld.environment.se' when resolving module 14.0
     between existing export 14.0.org.jboss.weld.environment.se
      NO BLAME and uses constraint 2.0.org.jboss.weld.environment.se
      BLAMED ON [[14.0] package; (&(package=org.jboss.weld.environment.se)(version>=1.2.0.SNAPSHOT))]

## Fixing not exported/imported package issues while running it on an OSGi environment
The second commit fixes a non exported/imported package: `org.jboss.weld.interceptor`. When one of the class is used by any clients bundles, it's raising an exception:

    16:13:32.164 [Gogo shell]    ERROR o.j.w.e.o.i.i.Weld - Initialization of Weld instance for bundle com.sample.hello-world-multilingual [10] caused an error: java.lang.NoClassDefFoundError: org/jboss/weld/interceptor/InterceptorBindingType
    java.lang.NoClassDefFoundError: org/jboss/weld/interceptor/InterceptorBindingType
        at org.jboss.weld.bean.InterceptorImpl.getInterceptorBindings(InterceptorImpl.java:80)
        at org.jboss.weld.bean.InterceptorImpl.toString(InterceptorImpl.java:120)
        at java.text.MessageFormat.subformat(MessageFormat.java:1246)
        at java.text.MessageFormat.format(MessageFormat.java:836)
        at java.text.Format.format(Format.java:140)
        at java.text.MessageFormat.format(MessageFormat.java:812)
        at ch.qos.cal10n.MessageConveyor.getMessage(MessageConveyor.java:89)
        at org.jboss.weld.logging.WeldMessageConveyor.getMessage(WeldMessageConveyor.java:66)
        at org.slf4j.cal10n.LocLogger.trace(LocLogger.java:72)
        at org.jboss.weld.bean.AbstractBean.initDefaultQualifiers(AbstractBean.java:215)
        at org.jboss.weld.bean.AbstractBean.initQualifiers(AbstractBean.java:209)
        at org.jboss.weld.bean.ManagedBean.<init>(ManagedBean.java:286)
        at org.jboss.weld.bean.InterceptorImpl.<init>(InterceptorImpl.java:63)
        at org.jboss.weld.bean.InterceptorImpl.of(InterceptorImpl.java:59)
        at org.jboss.weld.bootstrap.AbstractBeanDeployer.createInterceptor(AbstractBeanDeployer.java:228)
        at org.jboss.weld.bootstrap.BeanDeployer.createBeans(BeanDeployer.java:149)
        at org.jboss.weld.bootstrap.BeanDeployment.createBeans(BeanDeployment.java:204)
        at org.jboss.weld.bootstrap.WeldBootstrap.deployBeans(WeldBootstrap.java:357)