travis: fix export private key

Author: mcuadros

.travis.yml

@@ -32,7 +32,7 @@ before_install:
   - >
     if [ "$TRAVIS_PULL_REQUEST" = "false" ] ; then \
       bash .travis/install_key.sh; \
-      SSH_TEST_PRIVATE_KEY=$HOME/.travis/deploy.pem; \
+      export SSH_TEST_PRIVATE_KEY=$HOME/.travis/deploy.pem; \
     else \
       export SSH_AUTH_SOCK=""; \
     fi

.travis/install_key.sh

@@ -1,11 +1,9 @@
 #!/bin/bash
-export SSH_TEST_PRIVATE_KEY=$PWD/.travis/deploy.pem
-
 openssl aes-256-cbc \
     -K $encrypted_1477e58fe67a_key \
     -iv $encrypted_1477e58fe67a_iv \
     -in .travis/deploy.pem.enc \
-    -out .travis/deploy.pem -d
+    -out $HOME/.travis/deploy.pem -d
 
-chmod 600 .travis/deploy.pem
+chmod 600 $HOME/.travis/deploy.pem