shell - chrooting on srv/ sub-directory when 'app run' command is lau…

…nched from a directory not containing a md.restx.json file.

This fixes #188

restx-core-shell/src/main/java/restx/core/shell/AppShellCommand.java

@@ -611,6 +611,28 @@ public void run(final RestxShell shell) throws Exception {
                shell.cd(standardCachedAppPath(appNameArg.get()));
            }

            if(!ModuleDescriptorType.RESTX.resolveDescriptorFile(shell.currentLocation()).exists()) {

                Path srvDir = shell.currentLocation().resolve("srv");
                if(srvDir.toFile().exists()) {
                    shell.cd(srvDir);
                    if(!ModuleDescriptorType.RESTX.resolveDescriptorFile(shell.currentLocation()).exists()) {
                        shell.println(String.format("Cannot find %s in both %s and %s",
                                ModuleDescriptorType.RESTX.getDescriptorFileName(),
                                shell.currentLocation().getParent().toAbsolutePath(),
                                shell.currentLocation().toAbsolutePath()));
                        shell.println("=> Cannot run application");
                        return;
                    }
                } else {
                    shell.println(String.format("Cannot find %s in %s",
                            ModuleDescriptorType.RESTX.getDescriptorFileName(),
                            shell.currentLocation().toAbsolutePath()));
                    shell.println("=> Cannot run application");
                    return;
                }
            }

            boolean sourcesAvailable = Apps.with(shell.getFactory().getComponent(AppSettings.class)).sourcesAvailableIn(shell.currentLocation());

            String appClassName;