try fix coverity build

--HG--
branch : coverity

.travis.yml

@@ -3,23 +3,6 @@ language: c
 git:
   depth: 3
 
-addons:
-  apt:
-    packages:
-    # packages list: https://github.com/travis-ci/apt-package-whitelist/blob/master/ubuntu-precise
-    - zlib1g-dev
-    - libtomcrypt-dev
-    - libtommath-dev
-
-install:
-  - autoconf 
-  - autoheader 
-  - ./configure $CONFIGURE_FLAGS CFLAGS="-O2 -Wall -Wno-pointer-sign $WEXTRAFLAGS $EXTRACFLAGS" --prefix="$HOME/inst" || (cat config.log; exit 1)
-  - if [ "$NOWRITEV" = "1" ]; then sed -i -e s/HAVE_WRITEV/DONT_HAVE_WRITEV/ config.h ; fi
-  - make -j3 
-  # avoid concurrent install, osx/freebsd is racey (https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208093)
-  - make install 
-
 env:
   global:
    # The next declaration is the encrypted COVERITY_SCAN_TOKEN, created
@@ -28,7 +11,16 @@ env:
    - BUNDLEDLIBTOM=--enable-bundled-libtom
    - MULTI=1
 
+before_install:
+  - echo -n | openssl s_client -connect https://scan.coverity.com:443 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' | sudo tee -a /etc/ssl/certs/ca-
+
 addons:
+  apt:
+    packages:
+    # packages list: https://github.com/travis-ci/apt-package-whitelist/blob/master/ubuntu-precise
+    - zlib1g-dev
+    - libtomcrypt-dev
+    - libtommath-dev
   coverity_scan:
     project:
       name: "mkj/dropbear"